criyle/codenet-compile-errors huggingface dataset:
Language: C++

#include<bits/stdc++.h>
using namespace std;

int main(){
  int A,B,r=0;
  cin >> A >> B;
  for(int i=A; i<B; i++){
    int x=i%1o, y=i/100%10, z=i/1000%10, k=i/10000%10;
    if(x==k && y==z){
      r++;
    }
  }
  cout << r << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:13: error: unable to find numeric literal operator 'operator""o'
    8 |     int x=i%1o, y=i/100%10, z=i/1000%10, k=i/10000%10;
      |             ^~
a.cc:9:11: error: 'k' was not declared in this scope
    9 |     if(x==k && y==z){
      |           ^
a.cc:9:16: error: 'y' was not declared in this scope
    9 |     if(x==k && y==z){
      |                ^
a.cc:9:19: error: 'z' was not declared in this scope
    9 |     if(x==k && y==z){
      |                   ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main() {
int A,B,C,D,E,F,sum,hajime,saigo;
cin >> A >> B; 
C = A; 
while (C <= B) {
  	D = C /10000;
 	E = C /1000 - D*10;
  	F = C /100 - 100 * D - 10 * E;
 	C = 10000*D + 1000*E + 100*F + 10 * E + D;
  	if (C < A) {
      sum --;
    }
    sum ++;
    C += 100;
}
  cout << sum << endl;

Compiler output:
a.cc: In function 'int main()':
a.cc:18:23: error: expected '}' at end of input
   18 |   cout << sum << endl;
      |                       ^
a.cc:3:12: note: to match this '{'
    3 | int main() {
      |            ^
Language: C++

#include <iostream>
#include<vector>
using namespace std;

int main(){
  int a,b;
  cin>>a>>b;

  vector<int> A[5];
  int n=a;
  int count=0;
  
  while(n<=b){
    a=n;
    a%10=A[0];
    a/10%10=A[1];
    a/100%10=A[2];
    a/1000%10=A[3];
    a/10000%10=A[4];
    
    if(A[0]==A[4] and A[1]==A[3]){
       count++;
    }
    
    n++;
    
  }
  cout<<count<<endl;
}

  
  
    
  
  
      
  

Compiler output:
a.cc: In function 'int main()':
a.cc:15:6: error: lvalue required as left operand of assignment
   15 |     a%10=A[0];
      |     ~^~~
a.cc:16:9: error: lvalue required as left operand of assignment
   16 |     a/10%10=A[1];
      |     ~~~~^~~
a.cc:17:10: error: lvalue required as left operand of assignment
   17 |     a/100%10=A[2];
      |     ~~~~~^~~
a.cc:18:11: error: lvalue required as left operand of assignment
   18 |     a/1000%10=A[3];
      |     ~~~~~~^~~
a.cc:19:12: error: lvalue required as left operand of assignment
   19 |     a/10000%10=A[4];
      |     ~~~~~~~^~~
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
  int A, B, a;
  cin >> A >> B;
  a = 0;
  for (int i = A; i =< B; i ++){
    if (i % 10000 / 1000 == i % 100 / 10 || i / 10000 == i % 10) a ++;
  }
  cout << a << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:22: error: expected primary-expression before '<' token
    8 |   for (int i = A; i =< B; i ++){
      |                      ^
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
  int A, B, count = 0;
  cin >> A >> B;
  while(A<=B){
    int a,b,c,d;
    a = A % 10;
    b = (A / 10) % 10;
    c = (A / 1000) % 10;
    d = A / 10000;
    if(a = d && b = c)
      count++;
    A++;
  }
  cout << count << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:13:14: error: lvalue required as left operand of assignment
   13 |     if(a = d && b = c)
      |            ~~^~~~
Language: C++

#include <iostream>
using namespace std;

int main()
{
int A,B;
  int i;
i=B-A;
  int c=0;
  while(i>=0)
  {
   if((A/10000 == B % 10) && (A/1000 %10 == A % 100 /10))
   {
     c = c+1
   }
   
   i--;
   A =+1;
   }
  cout << c ;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:13: error: expected ';' before '}' token
   14 |      c = c+1
      |             ^
      |             ;
   15 |    }
      |    ~
Language: C++

#include <iostream>
using namespace std;

int main()
{
int A,B;
  int i;
i=B-A;
  int c=0;
  while(i>=0)
  {
   if((A/10000 == B % 10) && (A/1000 %10 == A % 100 /10))
   {
     c = c+1
   }
   
   i--;
   A =+1;
   }
  cout <<c;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:13: error: expected ';' before '}' token
   14 |      c = c+1
      |             ^
      |             ;
   15 |    }
      |    ~
Language: C++

#include <iostream>
using namespace std;

int main()
{
int A,B;
  int i;
i=B-A;
  while(i>=0)
  {
   if((A/10000 == B % 10) && (A/1000 %10 == A % 100 /10))
   {
     cout << +1;
   }
   
   i--;
   A =+1;
   }
  

Compiler output:
a.cc: In function 'int main()':
a.cc:18:5: error: expected '}' at end of input
   18 |    }
      |     ^
a.cc:5:1: note: to match this '{'
    5 | {
      | ^
Language: C++

#include <iostream>
using namespace std;

int main()
{
int A,B;
  int i;
i=B-A;
  while(i>=0)
  {
   if(A/10000 == B % 10) && (A/1000 %10 == A % 100 /10)
   {
     cout << +1;
   }
   
   i--;
   A =+1;
   }
  
  

Compiler output:
a.cc: In function 'int main()':
a.cc:11:29: error: expected identifier before '(' token
   11 |    if(A/10000 == B % 10) && (A/1000 %10 == A % 100 /10)
      |                             ^
a.cc:18:5: error: expected '}' at end of input
   18 |    }
      |     ^
a.cc:5:1: note: to match this '{'
    5 | {
      | ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
int kaibun(int x);

int main() {
  int a, b;
  cin >> a >> b;
  int sum = 0;
  for(int i = a; i < b+1; i++) {
    if(kaibun(i) == 1) sum++;
  }
  
  cout << sum << endl;
}

int kaibun(int x) {
 int s = i % 10, t = i / 10000 % 10;
 int u = i / 10 % 10, v = i / 1000 % 10; 
 if (s == t&&u == v) return 1;
 return 0;
}

Compiler output:
a.cc: In function 'int kaibun(int)':
a.cc:17:10: error: 'i' was not declared in this scope
   17 |  int s = i % 10, t = i / 10000 % 10;
      |          ^
a.cc:19:11: error: 't' was not declared in this scope
   19 |  if (s == t&&u == v) return 1;
      |           ^
a.cc:19:19: error: 'v' was not declared in this scope
   19 |  if (s == t&&u == v) return 1;
      |                   ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){int A,B,c;cin>>A>>B;
           c=B/100-A/100
if(A%100>A/1000%10*10+A/10000)c--;
if(B%100>=B/1000%10*10+B/10000)c++;
 cout<<c<<endl;}

Compiler output:
a.cc: In function 'int main()':
a.cc:4:25: error: expected ';' before 'if'
    4 |            c=B/100-A/100
      |                         ^
      |                         ;
    5 | if(A%100>A/1000%10*10+A/10000)c--;
      | ~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  int a;
  int b;
  cin >> a >> b;
  int sum = 0;
  
  for (int i = a; i <= b; i++){
    char str[5] = {0};
   	sprintf(str, %d, i);
    if(str[0] == str[4] && str[1] == str[3]) sum++;
  }
  cout << sum << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:12:22: error: expected primary-expression before '%' token
   12 |         sprintf(str, %d, i);
      |                      ^
a.cc:12:23: error: 'd' was not declared in this scope
   12 |         sprintf(str, %d, i);
      |                       ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  int a;
  int b;
  cin >> a >> b;
  int sum = 0;
  
  for (int i = a; i <= b; i++){
    char str[5] = {0};
   	sprintf(i, "%d", str);
    if(str[0] == str[4] && str[1] == str[3]) sum++;
  }
  cout << sum << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:12:17: error: invalid conversion from 'int' to 'char*' [-fpermissive]
   12 |         sprintf(i, "%d", str);
      |                 ^
      |                 |
      |                 int
In file included from /usr/include/c++/14/cstdio:42,
                 from /usr/include/c++/14/ext/string_conversions.h:45,
                 from /usr/include/c++/14/bits/basic_string.h:4154,
                 from /usr/include/c++/14/string:54,
                 from /usr/include/c++/14/bitset:52,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:52,
                 from a.cc:1:
/usr/include/stdio.h:365:38: note:   initializing argument 1 of 'int sprintf(char*, const char*, ...)'
  365 | extern int sprintf (char *__restrict __s,
      |                     ~~~~~~~~~~~~~~~~~^~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  int a;
  int b;
  cin >> a >> b;
  int sum = 0;
  
  for (int i = a; i <= b; i++){
    char str[5] = {0};
   	sprintf(i, %d, str);
    if(str[0] == str[4] && str[1] == str[3]) sum++;
  }
  cout << sum << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:12:20: error: expected primary-expression before '%' token
   12 |         sprintf(i, %d, str);
      |                    ^
a.cc:12:21: error: 'd' was not declared in this scope
   12 |         sprintf(i, %d, str);
      |                     ^
Language: C++

#include<bits/stdc++.h>
#define rep(i,n) for(int i=0;i<(int)(n);i++)
# define ALL(x) (x).begin(), (x).end()
using namespace std;
int main()
{int A,B,s;
 cin>>A>>B;
int count=0;
 for(int i=A;i<=B;i++){
 	for(int k=1;k<6;k++){
    i%10=s[k];
      i/10;
    }
 if(s[1]==s[5]&&s[2]==s[4]){count++;}
 }
return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:11: error: invalid types 'int[int]' for array subscript
   11 |     i%10=s[k];
      |           ^
a.cc:14:6: error: invalid types 'int[int]' for array subscript
   14 |  if(s[1]==s[5]&&s[2]==s[4]){count++;}
      |      ^
a.cc:14:12: error: invalid types 'int[int]' for array subscript
   14 |  if(s[1]==s[5]&&s[2]==s[4]){count++;}
      |            ^
a.cc:14:18: error: invalid types 'int[int]' for array subscript
   14 |  if(s[1]==s[5]&&s[2]==s[4]){count++;}
      |                  ^
a.cc:14:24: error: invalid types 'int[int]' for array subscript
   14 |  if(s[1]==s[5]&&s[2]==s[4]){count++;}
      |                        ^
Language: C++

#include<bits/stdc++.h>
#define rep(i,n) for(int i=0;i<(int)(n);i++)
# define ALL(x) (x).begin(), (x).end()
using namespace std;
int main()
{int A,B;
 cin>>A>>B;
int count=0;
 for(int i=A;i<=B;i++){
 	for(int k=1;k<6;k++){
    i%10=s[k];
      i/10;
    }
 if(s[1]==s[5]&&s[2]==s[4]){count++;}
 }
return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:10: error: 's' was not declared in this scope
   11 |     i%10=s[k];
      |          ^
a.cc:14:5: error: 's' was not declared in this scope
   14 |  if(s[1]==s[5]&&s[2]==s[4]){count++;}
      |     ^
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
  int A,B,j;
  cin >> A >> B;
  j=o
  for (int i = A; i <= B; i++) {
     if ( i / 10000 == i % 10 && (i/100)%10==(i/10)%10)
        j++;
  }
  cout << j << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:5: error: 'o' was not declared in this scope
    7 |   j=o
      |     ^
a.cc:8:19: error: 'i' was not declared in this scope
    8 |   for (int i = A; i <= B; i++) {
      |                   ^
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
  int A,B;
  cin >> A >>B;
  int ans =0;

  for (int i = A; i <= B; i++) {
    int s = i;

    if(s/10000 == (((s%10000)%1000)%100)%10  &&  (s%10000)/1000 == (((s%10000)%1000)%100))/10{
      ans++;
  }
   
 }
 cout << ans << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:12:91: error: expected primary-expression before '/' token
   12 |     if(s/10000 == (((s%10000)%1000)%100)%10  &&  (s%10000)/1000 == (((s%10000)%1000)%100))/10{
      |                                                                                           ^
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
  int A,B;
  cin >> A >>B;
  int ans =0;

  for (int i = A; i <= B; i++) {
    int s = i;

    if(s/10000 == (((s%10000)%1000)%100)%10  &&  (s%10000)/1000 = (((s%10000)%1000)%100))/10{
      ans++;
  }
   
 }
 cout << ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:46: error: lvalue required as left operand of assignment
   12 |     if(s/10000 == (((s%10000)%1000)%100)%10  &&  (s%10000)/1000 = (((s%10000)%1000)%100))/10{
      |        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~
a.cc:12:90: error: expected primary-expression before '/' token
   12 |     if(s/10000 == (((s%10000)%1000)%100)%10  &&  (s%10000)/1000 = (((s%10000)%1000)%100))/10{
      |                                                                                          ^
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
  int a,b,n=0;
  cin >>a >>b ;
  for(i=a;i<b+1;i++){
    int man,sen,zyu,iti;
    man=i/10000;
    sen=(i-man*10000)/1000;
    iti=i%10;
    zyu=((i-iti)/10)%10;
    if(man=iti&&sen=zyu){n++;}
  
  
  }
  
  
  
  
  cout<<n <<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:7: error: 'i' was not declared in this scope
    7 |   for(i=a;i<b+1;i++){
      |       ^
a.cc:13:15: error: lvalue required as left operand of assignment
   13 |     if(man=iti&&sen=zyu){n++;}
      |            ~~~^~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
  int a,b;
  cin >> a >> b;
  int ans=0;
  while ( a<=b ) {
    string s=to_string(a);
    if ( a[0]==a[4] && a[1]==a[3] ) ans++;
    a++;
  }
  cout << ans << '\n';
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:11: error: invalid types 'int[int]' for array subscript
   10 |     if ( a[0]==a[4] && a[1]==a[3] ) ans++;
      |           ^
a.cc:10:17: error: invalid types 'int[int]' for array subscript
   10 |     if ( a[0]==a[4] && a[1]==a[3] ) ans++;
      |                 ^
a.cc:10:25: error: invalid types 'int[int]' for array subscript
   10 |     if ( a[0]==a[4] && a[1]==a[3] ) ans++;
      |                         ^
a.cc:10:31: error: invalid types 'int[int]' for array subscript
   10 |     if ( a[0]==a[4] && a[1]==a[3] ) ans++;
      |                               ^
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
  int A,B,,a,b,sum=0;
  cin >> A>>B;
  int i=1;
  a=(A-A%1000)/1000;
  b=(B-B%1000)/1000;
    
  if(b-a>0){
    sum=(b-a-1)*10;

    a=(A-A%100)/100%10;
    b=(B-B%100)/100%10;
    sum+=a+9-b;
    
  }
  
  else{
    
  }
  for(i;i<=N;i++){
    cin>>x;
      if(x<K-x){
        sum+=2*x
      }else{
        sum+=2*(K-x)
      }
  }
    cout<<sum<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:5:11: error: expected unqualified-id before ',' token
    5 |   int A,B,,a,b,sum=0;
      |           ^
a.cc:23:12: error: 'N' was not declared in this scope
   23 |   for(i;i<=N;i++){
      |            ^
a.cc:24:10: error: 'x' was not declared in this scope
   24 |     cin>>x;
      |          ^
a.cc:25:12: error: 'K' was not declared in this scope
   25 |       if(x<K-x){
      |            ^
Language: C++

#include <bits/stdc++.h>
#include <cmath>
using namespace std;

int main() {
  int A,B,X,n,a;
  X=0;
  cin>>A,B;
  for(A;A<=B;A++){
    A=a;
    for(int i=0;a!=0;i++){
      n+=(a%10)*pow(10,i);
      a/10;
    }
    if(n=A){
      x++;
    }
  }
  cout<<x<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:16:7: error: 'x' was not declared in this scope
   16 |       x++;
      |       ^
a.cc:19:9: error: 'x' was not declared in this scope
   19 |   cout<<x<<endl;
      |         ^
Language: C++

#include <bits/stdc++.h>
#include<chrono>
using namespace std;
using ll = long long;

int main() {
  int A, B;
  cin >> A >> B;
  int ans = 0;
  for (int i = A; i <= B; i++) {
    int a = i % 10; //1桁目
    int b = i / 10000 % 10; 
    int c = i / 10 % 10;
    int d = i / 1000 % 10;
    if (a == b && c == d) {
      ans++;
    }
  }
  cout < ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:19:14: error: invalid operands of types 'int' and '<unresolved overloaded function type>' to binary 'operator<<'
   19 |   cout < ans << endl;
      |          ~~~~^~~~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
  int a,b,sum=0;
  cin>>a>>b;
  for(int i=a;i<=b;i++){
    int x,y,z,w;
    x=i%10;//1桁目
    y=i/10000;//５桁目
    z=i%100;
    z\=10;//２桁目
    w=i/1000;
    w%=10;//４桁目
    if(x==y && z==w)
      sum++;
  }
  cout<<sum<<endl;
}


Compiler output:
a.cc:12:6: error: stray '\' in program
   12 |     z\=10;//２桁目
      |      ^
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
  int a,b,sum=0;
  cin>>a>>b;
  for(int i=a,i<=b,i++){
    int x,y;
    x=i%100;
    y=i/1000;
    if(x==y)
      sum++;
  }
  cout<<sum<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:16: error: expected ';' before '<=' token
    7 |   for(int i=a,i<=b,i++){
      |                ^~
      |                ;
a.cc:7:16: error: expected primary-expression before '<=' token
    7 |   for(int i=a,i<=b,i++){
      |                ^~
a.cc:7:23: error: expected ';' before ')' token
    7 |   for(int i=a,i<=b,i++){
      |                       ^
      |                       ;
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
  int a,b,sum=0;
  cin>>a>>b;
  for(int i=a,ib,i++){
    int x,y;
    x=i%100;
    y=i/1000;
    if(x==y)
      sum++;
  }
  cout<<sum<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:19: error: expected ';' before '++' token
    7 |   for(int i=a,ib,i++){
      |                   ^~
      |                   ;
a.cc:7:21: error: expected primary-expression before ')' token
    7 |   for(int i=a,ib,i++){
      |                     ^
a.cc:7:21: error: expected ';' before ')' token
    7 |   for(int i=a,ib,i++){
      |                     ^
      |                     ;
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
  int a,b,sum=0;
  cin>>a>>b;
  for(a,a<=b,a++){
    int x,y;
    x=a%100;
    y=a/1000;
    if(x==y)
      sum++;
  }
  cout<<sum<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:17: error: expected ';' before ')' token
    7 |   for(a,a<=b,a++){
      |                 ^
      |                 ;
a.cc:15:1: error: expected primary-expression before '}' token
   15 | }
      | ^
a.cc:14:19: error: expected ')' before '}' token
   14 |   cout<<sum<<endl;
      |                   ^
      |                   )
   15 | }
      | ~                  
a.cc:7:6: note: to match this '('
    7 |   for(a,a<=b,a++){
      |      ^
a.cc:15:1: error: expected primary-expression before '}' token
   15 | }
      | ^
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
  int a,b,sum=0;
  cin>>a>>b;
  for(a,a=<b,a++){
    int x,y;
    x=a%100;
    y=a/1000;
    if(x==y)
      sum++;
  }
  cout<<sum<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:11: error: expected primary-expression before '<' token
    7 |   for(a,a=<b,a++){
      |           ^
a.cc:15:1: error: expected primary-expression before '}' token
   15 | }
      | ^
a.cc:14:19: error: expected ')' before '}' token
   14 |   cout<<sum<<endl;
      |                   ^
      |                   )
   15 | }
      | ~                  
a.cc:7:6: note: to match this '('
    7 |   for(a,a=<b,a++){
      |      ^
a.cc:15:1: error: expected primary-expression before '}' token
   15 | }
      | ^
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
int a,b,c;
cin >> a >> b;
c = 0;
for(i=a;i=b;i++){
 if(i/10000 == i%10 || (i%10000)/1000 == (1%100)/10)
  c++;
}
 cout << c << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:5: error: 'i' was not declared in this scope
    8 | for(i=a;i=b;i++){
      |     ^
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {

  int A,B,i,n=0;
  cin >> A >> B;
  for(i=A;i=<B;i++){
    if(i-i%100==i%10000+i%1000-i%10000*10) n++;
  }
  cout << n << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:13: error: expected primary-expression before '<' token
    8 |   for(i=A;i=<B;i++){
      |             ^
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
  int N, A, b;
  cin >> N >> A;

  // ここにプログラムを追記
  for (int i = N; i < A; i++) {
    if (i / 10000 == i % 10000 % 1000 % 100 % 10) {
      if (i / 1000 == i % 100 / 10) {
        b++;
    else {
      continue;
    }
      else {
        continue;
      }
      }
    }
  }
  cout << b << endl;
  
}


Compiler output:
a.cc: In function 'int main()':
a.cc:13:5: error: expected '}' before 'else'
   13 |     else {
      |     ^~~~
a.cc:11:37: note: to match this '{'
   11 |       if (i / 1000 == i % 100 / 10) {
      |                                     ^
a.cc:16:7: error: expected '}' before 'else'
   16 |       else {
      |       ^~~~
a.cc:10:51: note: to match this '{'
   10 |     if (i / 10000 == i % 10000 % 1000 % 100 % 10) {
      |                                                   ^
a.cc: At global scope:
a.cc:21:3: error: expected declaration before '}' token
   21 |   }
      |   ^
a.cc:22:3: error: 'cout' does not name a type
   22 |   cout << b << endl;
      |   ^~~~
a.cc:24:1: error: expected declaration before '}' token
   24 | }
      | ^
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
  int A, B, j;
  j = 0;
  cin >> A >> B;
  for (i = 0; i <= B - A; i++){
    int a, b, c, d, e;
    a = (A + i) / 10000;
    b = ((A + i) % 10000) /1000;
    c = ((A + i) % 1000) /100;
    d = ((A + i) % 100) /10;
    e = (A + i) % 10;
    if (a == e && b == d)
    j++;
  }
  cout << j << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:8: error: 'i' was not declared in this scope
    8 |   for (i = 0; i <= B - A; i++){
      |        ^
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
  /*
  int i =12345;
  int s = i %10 ,t = i /10000 % 10;
  int u = i /10 % 10, v = i/1000 % 10;
  cout << s<< endl; //s=5 iti
  cout << t<< endl; //t=1 man
  cout << u<< endl; //u=4 jyu
  cout << v<< endl; //v=2 sen 
  */
  int c = 0;
  cin >> a>> b;
  for(int i = a; i <= b; i++){
    int s = i %10 ,t = i /10000 % 10;
    int u = i /10 % 10, v = i/1000 % 10;
    if((s == t)&&(u == v)){
     c++; 
    }
    cout<<t;
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:15:10: error: 'a' was not declared in this scope
   15 |   cin >> a>> b;
      |          ^
a.cc:15:14: error: 'b' was not declared in this scope
   15 |   cin >> a>> b;
      |              ^
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main(){
	int A,B,C,D;
	cin >> A >> B;
	C=0;
	D=0;

	for(int i =A;i<B+1;i++){
		int k = i;
		for(int j =5;j<0;j--){
			D=D + pow(10,j)*(k%10);
			k = k/10;
		}
		if(D==i){
			C++
		}
		k=0;
		D=0;
	
	}
	cout << C << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:17:28: error: expected ';' before '}' token
   17 |                         C++
      |                            ^
      |                            ;
   18 |                 }
      |                 ~
Language: C++


Beta
paiza.IO

    新規コード
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    ウェブ開発
    New!

    日本語

	

    Main.cpp

Success

    出力
    コンパイルエラー
    入力
    コメント 0
    (0.00 sec) 

900



Compiler output:
a.cc:2:1: error: 'Beta' does not name a type
    2 | Beta
      | ^~~~
Language: C++

#include <stdio.h>
int main(void){
    // Your code here!
    int A,B;
    int i,j;
    int count = 0;
    int i1,i2,i3,i4,i5;
    
    cin >> A;
    cin >> B;
    
    for( i = A; i <= B; i++ ){
        
        i1 = i % 10;
        i2 = (i / 10) % 10;
        i4 = (i / 1000) % 10;
        i5 = (i / 10000) % 10;
        
        if( i1 == i5 && i2 == i4) count ++;
        
    }
    
    cout << count;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:5: error: 'cin' was not declared in this scope
    9 |     cin >> A;
      |     ^~~
a.cc:23:5: error: 'cout' was not declared in this scope; did you mean 'count'?
   23 |     cout << count;
      |     ^~~~
      |     count
Language: C++

function Main(input){
	var sum = 0;
	input = input.split(" ").map(Number);
	for(var i=input[0];i<=input[1];i++){
		var n = String(i).split("");
		var p = [];
		for(var k=0;k<n.length;k++){
		    p.push(n[n.length-1-k])
		}
		if(n.join("")==p.join("")) sum++;
	}
	console.log(sum)
}Main(require("fs").readFileSync("/dev/stdin", "utf8").trim());

Compiler output:
a.cc:1:1: error: 'function' does not name a type; did you mean 'union'?
    1 | function Main(input){
      | ^~~~~~~~
      | union
a.cc:13:6: error: expected constructor, destructor, or type conversion before '(' token
   13 | }Main(require("fs").readFileSync("/dev/stdin", "utf8").trim());
      |      ^
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
  int A, B;
  cin >> A >> B;
  S = 0;
  for (int i = A; i < B + 1; i++){
    if (i % 10 == i / 10000 && i / 1000 % 10 == i / 10 % 10)
      S++;
  }
  cout << S << endl;

}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:3: error: 'S' was not declared in this scope
    7 |   S = 0;
      |   ^
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
  int A, B;
  cin >> A >> B;
  S = 0;
  for (int i = A; i < B + 1; i++){
    if (i % 10 == i / 10000 && i / 1000 % 10 == i / 100 % 10)
      S++;
  }
  cout << S << endl;

}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:3: error: 'S' was not declared in this scope
    7 |   S = 0;
      |   ^
Language: C++

using namespace std;

#define all(v) v.begin(), v.end()
#define rep(i, n) REP(i, 0, n)
#define REP(i, x, n) for (int i = x; i < n; i++)
#define REPE(i, x, n) for (int i = x; i <= n; i++)
#define OP(x) cout << x << endl;
template<typename T> T gcd(T a, T b) { return b ? gcd(b, a % b) : a; }
template<typename T> T lcm(T a, T b) { return a / gcd(a, b) * b; }
template<class T> void chmax(T& a, T b) { if(a > b) a = b; }
template<class T> void chmin(T& a, T b) { if(a < b) b = a; }
typedef long long ll;

int main() {
    int a, b; cin >> a >> b;
    int s = b - a;
    int ans = 0;
    if(s < 100){
        ans = 1;
    }else if(s < 1000){
        ans = s / 100 + 1;
    }else{
        ans = s / 100;
    }
    cout << ans << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:15:15: error: 'cin' was not declared in this scope
   15 |     int a, b; cin >> a >> b;
      |               ^~~
a.cc:1:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
  +++ |+#include <iostream>
    1 | using namespace std;
a.cc:25:5: error: 'cout' was not declared in this scope
   25 |     cout << ans << endl;
      |     ^~~~
a.cc:25:5: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:25:20: error: 'endl' was not declared in this scope
   25 |     cout << ans << endl;
      |                    ^~~~
a.cc:1:1: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
  +++ |+#include <ostream>
    1 | using namespace std;
Language: C++

int main() {
        int a, b;
        cin >> a >> b;
        int cnt=0;

        for (int i=a; i<=b; i++) {
                int dig1, dig2, dig4, dig5;
                dig1 = i%10;
                dig2 = (i%100 - dig1)/10;
                dig5 = i/10000; 
                dig4 = i/1000 -10*dig5;
                if ((dig1 == dig5) && (dig2 == dig4)) {
                        cnt++;
                }
        }

        cout << cnt << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:3:9: error: 'cin' was not declared in this scope
    3 |         cin >> a >> b;
      |         ^~~
a.cc:17:9: error: 'cout' was not declared in this scope
   17 |         cout << cnt << endl;
      |         ^~~~
a.cc:17:24: error: 'endl' was not declared in this scope
   17 |         cout << cnt << endl;
      |                        ^~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
  int A,B,c;
  cin >> A >> B;
  for (i = A; i <= B; i++) {
    if (i / 10000 == i % 10 && i % 10000 / 1000 == i / 10 % 10) {
      c++;
    }
  }
  cout << c << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:8: error: 'i' was not declared in this scope
    7 |   for (i = A; i <= B; i++) {
      |        ^
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main(){
  int A,B;
  int N = 0;
  cin >> A >> B;
  while(A <= B){
    if(A%10 = A/10000 && (A%100-A%10)/10 = (A/1000-(A/10000)*10)){
      N++;
    }
    A += 1;
  }
  cout << N << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:23: error: lvalue required as left operand of assignment
    9 |     if(A%10 = A/10000 && (A%100-A%10)/10 = (A/1000-(A/10000)*10)){
      |               ~~~~~~~~^~~~~~~~~~~~~~~~~~
Language: C++

#include <bits/stdc++.h>

using namespace std;

bool kaibun(string s) {
	for (int i = 0;i < s.size() / 2;i++) {
		if (s[i] != s[s.size() - 1 - i]) return flase;
	}

	return true;
}

int main() {
  
  	int a, b, ans=0;
  	string s;
  
  	cin>> a >> b;
  
  	for(int i=a;i<=b;i++){
      	s=(stirng)(i);
      	if(kaibun(s)) ans++;
    }
  
  	cout<< ans << endl;
  
	return 0;
}


Compiler output:
a.cc: In function 'bool kaibun(std::string)':
a.cc:7:57: error: 'flase' was not declared in this scope; did you mean 'fclose'?
    7 |                 if (s[i] != s[s.size() - 1 - i]) return flase;
      |                                                         ^~~~~
      |                                                         fclose
a.cc: In function 'int main()':
a.cc:21:12: error: 'stirng' was not declared in this scope
   21 |         s=(stirng)(i);
      |            ^~~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
  int A,B;
  cin >> A >> B;
  int sum;
  
  for (int i = 0;i < B - A + 1;i++) {
    int x = A + i;
    x /= 1000;
    x = x / 10 + x % 10 * 10;
    int y = A + i;
    y %= 100;
    
    if (x == y) {
      sum++;
    }
    
    cout << sum << endl;
      

}


Compiler output:
a.cc: In function 'int main()':
a.cc:23:2: error: expected '}' at end of input
   23 | }
      |  ^
a.cc:4:12: note: to match this '{'
    4 | int main() {
      |            ^
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {

  int A,B;
  cin >> A >> B;
  int total = 0;
  
  while(A<=B){
    int x, y;
    x = A / 1000;
    y = A - (A / 100 * 100)
  
    if(x = y){
      total += 1;
    }
    A+= 1;
  }
  
  cout << total << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:13:28: error: expected ';' before 'if'
   13 |     y = A - (A / 100 * 100)
      |                            ^
      |                            ;
   14 | 
   15 |     if(x = y){
      |     ~~
Language: C++

#include <bits/stdc++.h>

using nanespace std;

int main()
{
  int a,b,count=0;
  cin>>a>>b;
  for(int i=a;i<=b;i++)
  {
    if((i/10000==i%10)&&((i/1000)%10==(i%100)/10))
    {
      count++;
    }
  }
  cout<<count<<endl;
}

Compiler output:
a.cc:3:7: error: expected nested-name-specifier before 'nanespace'
    3 | using nanespace std;
      |       ^~~~~~~~~
a.cc: In function 'int main()':
a.cc:8:3: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    8 |   cin>>a>>b;
      |   ^~~
      |   std::cin
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:146,
                 from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:16:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   16 |   cout<<count<<endl;
      |   ^~~~
      |   std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:16:16: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   16 |   cout<<count<<endl;
      |                ^~~~
      |                std::endl
In file included from /usr/include/c++/14/istream:41,
                 from /usr/include/c++/14/sstream:40,
                 from /usr/include/c++/14/complex:45,
                 from /usr/include/c++/14/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:127:
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main()
{
	int a, b; cin >> a >> b;
  	int n, cnt = 0;
  
  	for (n = a; n <= b; n++) {
      	if ((string)n[0] == (string)n[4] && (string)n[1] == (string)n[3]) cnt++;
    }
  	cout << cnt << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:22: error: invalid types 'int[int]' for array subscript
   10 |         if ((string)n[0] == (string)n[4] && (string)n[1] == (string)n[3]) cnt++;
      |                      ^
a.cc:10:38: error: invalid types 'int[int]' for array subscript
   10 |         if ((string)n[0] == (string)n[4] && (string)n[1] == (string)n[3]) cnt++;
      |                                      ^
a.cc:10:54: error: invalid types 'int[int]' for array subscript
   10 |         if ((string)n[0] == (string)n[4] && (string)n[1] == (string)n[3]) cnt++;
      |                                                      ^
a.cc:10:70: error: invalid types 'int[int]' for array subscript
   10 |         if ((string)n[0] == (string)n[4] && (string)n[1] == (string)n[3]) cnt++;
      |                                                                      ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
  int  A, B;
  cin >> A >> B;
  for(;A<=B;A++)
    for(int i=0;i<2;i++){
      if((A/powl(10,i))%10 != (A/powl(10,4-i))%10)
        break;
      if(i)
        cout << A;
    }
  cout << endl;
}
  

Compiler output:
a.cc: In function 'int main()':
a.cc:8:24: error: invalid operands of types 'long double' and 'int' to binary 'operator%'
    8 |       if((A/powl(10,i))%10 != (A/powl(10,4-i))%10)
      |          ~~~~~~~~~~~~~~^~~
      |            |            |
      |            long double  int
a.cc:8:47: error: invalid operands of types 'long double' and 'int' to binary 'operator%'
    8 |       if((A/powl(10,i))%10 != (A/powl(10,4-i))%10)
      |                               ~~~~~~~~~~~~~~~~^~~
      |                                 |              |
      |                                 long double    int
Language: C++

 for(int i=0;i<s.size();i++){
    //cout<<s.size()<<endl<<s.at(s.size()-1-i);
    str.at(i)=s.at(s.size()-1-i);
  }
  return s==str;
}

int main(){
  int a,b;
  cin>>a>>b;
  int sum=0;
  
  for(int i=a;i<b+1;i++){
    if(kaibun(i))
      sum++;
  }
  cout<<sum;
}

Compiler output:
a.cc:1:2: error: expected unqualified-id before 'for'
    1 |  for(int i=0;i<s.size();i++){
      |  ^~~
a.cc:1:14: error: 'i' does not name a type
    1 |  for(int i=0;i<s.size();i++){
      |              ^
a.cc:1:25: error: 'i' does not name a type
    1 |  for(int i=0;i<s.size();i++){
      |                         ^
a.cc:5:3: error: expected unqualified-id before 'return'
    5 |   return s==str;
      |   ^~~~~~
a.cc:6:1: error: expected declaration before '}' token
    6 | }
      | ^
a.cc: In function 'int main()':
a.cc:10:3: error: 'cin' was not declared in this scope
   10 |   cin>>a>>b;
      |   ^~~
a.cc:14:8: error: 'kaibun' was not declared in this scope
   14 |     if(kaibun(i))
      |        ^~~~~~
a.cc:17:3: error: 'cout' was not declared in this scope
   17 |   cout<<sum;
      |   ^~~~
Language: C++

#include <iostream>
#include <string>
using namespace std;

int main()
{
	int a, b;
	cin >> a >> b;

	int ret = 0;
	for (int i = a; i <= b; ++i) {
		string s = to_string(i);
		string t = s;
		reverse(s.begin(), s.end());
		if (s == t) {
			++ret;
		}
	}
	cout << ret << endl;

	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:17: error: 'reverse' was not declared in this scope
   14 |                 reverse(s.begin(), s.end());
      |                 ^~~~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main(){
  int A,B,ans;
  cin >> A >> B;
  
  for (int i = A;i < B;++i){
    if (((i/10000)==(i%10))&&(((i/1000)%10)==((i%100)/10))){
      ++ans;
    
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:2: error: expected '}' at end of input
   11 | }
      |  ^
a.cc:7:28: note: to match this '{'
    7 |   for (int i = A;i < B;++i){
      |                            ^
a.cc:11:2: error: expected '}' at end of input
   11 | }
      |  ^
a.cc:3:11: note: to match this '{'
    3 | int main(){
      |           ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)

int main() {
  int a,b;
  cin >> a >> b;
  int ans = 0;
  for (i=a;i<=b;i++){
    string str;
    str = to_string(i);
    if(str[0]==str[4]&&str[1]==str[2]) ans++;
  }
  cout << ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:8: error: 'i' was not declared in this scope
    9 |   for (i=a;i<=b;i++){
      |        ^
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
  int A, B;
  int sum_down;
  int sum_up;
  int ct = 0;
  cin >> A >> B;
  for(int i=0;i<B-A+1;i++){
    sum_down = (A+i)%100;
    sum_up = ((A+i)/1000)/10+(((A+i)/1000)%10)*10;
  	if(sum_down == sum_up){
      	ct ++;	
    }
  }
  		cout << A+i << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:17:27: error: 'i' was not declared in this scope
   17 |                 cout << A+i << endl;
      |                           ^
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
  int a,b;
  cin >> a >> b;
  int ans=0;
  for(;a<=b;a++){
    if((a/10000==a%10)&&((a/1000)%10==(a/10)%10)ans++;
  }
  cout << ans << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:49: error: expected ';' before 'ans'
    9 |     if((a/10000==a%10)&&((a/1000)%10==(a/10)%10)ans++;
      |                                                 ^~~
      |                                                 ;
a.cc:10:3: error: expected primary-expression before '}' token
   10 |   }
      |   ^
a.cc:9:55: error: expected ')' before '}' token
    9 |     if((a/10000==a%10)&&((a/1000)%10==(a/10)%10)ans++;
      |       ~                                               ^
      |                                                       )
   10 |   }
      |   ~                                                    
a.cc:10:3: error: expected primary-expression before '}' token
   10 |   }
      |   ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
bool f(int a)
{
  int k[5];
  for (int i=0; i<5; i++) {
    k[i] = a % 10;
    k /= 10;
  }
  return k[0]==k[4] && k[1]==k[3];
}
 
int main()
{
  int a, b;
  cin >> a >> b;
  int ans = 0;
  for (int i=a; i<=b; i++) {
    if (f(i)) ans++;
  }
  return 0;
}

Compiler output:
a.cc: In function 'bool f(int)':
a.cc:8:7: error: invalid operands of types 'int [5]' and 'int' to binary 'operator/'
    8 |     k /= 10;
      |     ~~^~~~~
a.cc:8:7: note:   in evaluation of 'operator/=(int [5], int)'
Language: C++

#include <bits/stdc++.h>
using namespace std;
bool f(int a)
{
  int k[5];
  for (int i=0; i<5; i++) {
    k[i] = a % 10;
    k /= 10;
  }
  return k[0]==k[4] && k[1]==k[2];
}

int main()
{
  int a, b;
  cin >> a >> b;
  int ans = 0;
  for (int i=a; i<=b; i++) {
    if (f(i)) ans++;
  }
  return 0;
}

Compiler output:
a.cc: In function 'bool f(int)':
a.cc:8:7: error: invalid operands of types 'int [5]' and 'int' to binary 'operator/'
    8 |     k /= 10;
      |     ~~^~~~~
a.cc:8:7: note:   in evaluation of 'operator/=(int [5], int)'
Language: C++

#include<iostream>
using namespace std;

int SplitDigit(int n,int number[5]){
  int i=0;
while(n>0){
number[i]=n%10;
  n/=10;
  i++;
}
}
int main(){
int A,B;
cin>>A>>B;
  int res=0;
  int number[5];
  for(int i=A;i<=B;i++){
    SplitDigit(i,number[5]);
    if(number[0]==number[4]&&number[1]==number[3]){
    res++;
    }
  }
  cout<<res;
      }

Compiler output:
a.cc: In function 'int SplitDigit(int, int*)':
a.cc:11:1: warning: no return statement in function returning non-void [-Wreturn-type]
   11 | }
      | ^
a.cc: In function 'int main()':
a.cc:18:26: error: invalid conversion from 'int' to 'int*' [-fpermissive]
   18 |     SplitDigit(i,number[5]);
      |                  ~~~~~~~~^
      |                          |
      |                          int
a.cc:4:26: note:   initializing argument 2 of 'int SplitDigit(int, int*)'
    4 | int SplitDigit(int n,int number[5]){
      |                      ~~~~^~~~~~~~~
Language: C++

#include<iostream>
using namespace std;
#define rep(i,n) for(int i=0;i<n;i++)

int main(){
  int A, B = 0;
  int N,a,b,c,d,e = 0;
  int count = 0;
  cin >> A >> B;
  N = A;
  rep(i,B-A){
    e = N%10;
    d = N/10%10;
    \\c = N/100%10;
    b = N/1000%10;
    a = N/10000%10;
    if(a==e && b==d)
      count++;
    N++;
  }  
}

Compiler output:
a.cc:14:5: error: stray '\' in program
   14 |     \\c = N/100%10;
      |     ^
a.cc:14:6: error: stray '\' in program
   14 |     \\c = N/100%10;
      |      ^
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main () {
  int A, B;
  cin >> A >> B;
  
  int a = A / 1000; //Aの上二桁
  int b = B / 1000; //Bの上二桁
  int Amiddle = A % 1000 / 100;
  int Bmiddle = B % 1000 / 100;
  
  quantity = (b - a + 1) * (Bmiddle - Amiddle + 1);
  
  cout << quantity << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:13:3: error: 'quantity' was not declared in this scope
   13 |   quantity = (b - a + 1) * (Bmiddle - Amiddle + 1);
      |   ^~~~~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main () {
  int A, B;
  cin >> A >> B;
  
  int a = A / 1000; //Aの上二桁
  int b = B / 1000; //Bの上二桁
  int Amiddle = A % 1000 / 100;
  int Bmiddle = B % 1000 / 100;
  
  quantity = (B - A + 1) * (Bmiddle - Amiddle + 1);
  
  cout << quantity << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:13:3: error: 'quantity' was not declared in this scope
   13 |   quantity = (B - A + 1) * (Bmiddle - Amiddle + 1);
      |   ^~~~~~~~
Language: C++

#include <bits/stdc++.h>
using namescape std;

int main () {
  int A, B;
  cin >> A >> B;
  
  int a = A / 1000; //Aの上二桁
  int b = B / 1000; //Bの上二桁
  int Amiddle = A % 1000 / 100;
  int Bmiddle = B % 1000 / 100;
  
  quantity = (B - A + 1) * (Bmiddle - Amiddle + 1);
  
  cout << quantity << endl;
}

Compiler output:
a.cc:2:7: error: expected nested-name-specifier before 'namescape'
    2 | using namescape std;
      |       ^~~~~~~~~
a.cc: In function 'int main()':
a.cc:6:3: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    6 |   cin >> A >> B;
      |   ^~~
      |   std::cin
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:146,
                 from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:13:3: error: 'quantity' was not declared in this scope
   13 |   quantity = (B - A + 1) * (Bmiddle - Amiddle + 1);
      |   ^~~~~~~~
a.cc:15:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   15 |   cout << quantity << endl;
      |   ^~~~
      |   std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:15:23: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   15 |   cout << quantity << endl;
      |                       ^~~~
      |                       std::endl
In file included from /usr/include/c++/14/istream:41,
                 from /usr/include/c++/14/sstream:40,
                 from /usr/include/c++/14/complex:45,
                 from /usr/include/c++/14/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:127:
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main(){
  int A, B, n = 0;
  cin >> A >> B;
  
  for (int i = A; I <= B; i++){
    int a_1 = i % 10;
    int a_2 = (i / 10) % 10;
    int a_4 = (i / 1000) % 10;
    int a_5 = i / 10000;
    
    if (a_1 == a_5 && a_2 == a_4)
      n++;
  }
  cout << n << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:19: error: 'I' was not declared in this scope
    8 |   for (int i = A; I <= B; i++){
      |                   ^
Language: C++

#include<iostream>
#include <bits/stdc++.h>
using namespace std;

int main()
{
  int a,b,c[5] ;  
  cin >> a >> b;
  int count = 0;
  for(int i=a;i<=b;++i){
    int div =100000;
    for(int j=0;j<5;j++){
      c[j]=i%div ;
      di/=10;
    }
    if(c[0]==c[4] && c[1]==c[3])
         count++;
  }
    cout << count << "\n" ;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:14:7: error: 'di' was not declared in this scope; did you mean 'div'?
   14 |       di/=10;
      |       ^~
      |       div
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
  int a,b,n;
  cin >> a >> b;
  n=0

  for (int i=a; i<=b; i++){
      if (i%10==i/10000%10 && i/10%10==i/1000%10)
        n++;
    if  (i==b)
      cout << n << endl;
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:6: error: expected ';' before 'for'
    7 |   n=0
      |      ^
      |      ;
    8 | 
    9 |   for (int i=a; i<=b; i++){
      |   ~~~ 
a.cc:9:17: error: 'i' was not declared in this scope
    9 |   for (int i=a; i<=b; i++){
      |                 ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  int up;
  int down;
  cin >> down;
  cin >> up;
  int count;
  int gap;
  gap = up - down:
  count = (gap -gap%100)/ 100 +1;
  int min;
  int max;
  min = down - down%100 + (down - down%10000)/10000 + (down%10000-down%1000)/100;
  max = up - up%100 + (up - up%10000)/10000 + (up%10000-up%1000)/100 ;
  
  if(min < down){
    count--;
  }
  if(max > up){
    count--;
  }
  cout << count << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:18: error: found ':' in nested-name-specifier, expected '::'
   11 |   gap = up - down:
      |                  ^
      |                  ::
a.cc:11:14: error: 'down' is not a class, namespace, or enumeration
   11 |   gap = up - down:
      |              ^~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  int up;
  int down;
  cin >> down;
  cin >> up;
  int count;
  count = {(up - down)-(up - down)%100} / 100 -1;
  int min;
  int max;
  min = down - down%100 + (down - down%10000)/10000 + (down%10000-down%1000)/100;
  max = up - up%100 + (up - up%10000)/10000 + (up%10000-up%1000)/100 ;
  
  if(min >= down){
    count++;
  }
  if(max <= up){
    count++;
  }
  cout << count << endl;
    
 
   	
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:40: error: expected ';' before '/' token
   10 |   count = {(up - down)-(up - down)%100} / 100 -1;
      |                                        ^~
      |                                        ;
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  int up;
  int down;
  cin >> down;
  cin >> up;
  int count;
  count = (up - down) / 100 -1;
  int min;
  int max;
  min = down - down%100 + (down - down%10000) + 10*(down%10000-down%100) ;
  max = up - up%100 + (up - up%10000) + 10*(up%10000-up%100) ;
  
  if(min >= down){
    count++;
  }
  if(max =< up){
    count++;
  }
  cout << count << endl;
    
 
   	
}

Compiler output:
a.cc: In function 'int main()':
a.cc:19:11: error: expected primary-expression before '<' token
   19 |   if(max =< up){
      |           ^
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
  int a,b;
  cin >> a >> b;
  int f=0;
  
  for(int i=a;i<b+1;i++){
    if( i/10000 == i%10 && (i/1000)%10 == (I/10)%10)
      f +=1;
    else
      f =f;
  }

  	cout << f << endl;

}


Compiler output:
a.cc: In function 'int main()':
a.cc:10:44: error: 'I' was not declared in this scope
   10 |     if( i/10000 == i%10 && (i/1000)%10 == (I/10)%10)
      |                                            ^
Language: C++

#include <bits/stdc++.h>
#include <math.h>
using namespace std;

int f(int x) {
  int k = 0;
  while (x >= 1) {
    k++;
    x /= 10;
  }
  int y = 0;
  while (x >= 10) {
    if (x/dtoi(pow(10,k)) == x%10) {
      x = (x%dtoi(pow(10,k)) - x%10) /10;
    } else {
      y = 1;
      break;
    }
  }
  return y;
}

int main() {
  int A, B;
  cin >> A >> B;
  int count = 0;
  for (int i = A; i <= B; i++) {
    if (f(i) == 1) count++;
  }
  cout << count << endl;
}


Compiler output:
a.cc: In function 'int f(int)':
a.cc:13:11: error: 'dtoi' was not declared in this scope; did you mean 'atoi'?
   13 |     if (x/dtoi(pow(10,k)) == x%10) {
      |           ^~~~
      |           atoi