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

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

int main() {
  int N, l,r, sum=0;
  cin >> N;
  
  for(int i=0;i<N;i++){
    cin>> l,r;
    sum+=r-l+1
  }
  cout << sum << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:15: error: expected ';' before '}' token
   10 |     sum+=r-l+1
      |               ^
      |               ;
   11 |   }
      |   ~
Language: C++

#include <bits/stdc++.h>
using namespace std;
int N, r, l, a;

int main() {
  cin >> Nl;
  for (int i = 0; i < N; i++) {
   cin >> r >> l;
   a += r - l + 1;
   cout << a << endl;
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:10: error: 'Nl' was not declared in this scope; did you mean 'l'?
    6 |   cin >> Nl;
      |          ^~
      |          l
Language: C++

#include <bits/stdc++.h>
using namespace std;
int N, r, l, a;
cin >> N >> r >> l;

int main() {
  for (int i = 0; i < N; i++) {
   cout << a += r - l + i << endl;
  }
}


Compiler output:
a.cc:4:1: error: 'cin' does not name a type
    4 | cin >> N >> r >> l;
      | ^~~
a.cc: In function 'int main()':
a.cc:8:27: error: invalid operands of types 'int' and '<unresolved overloaded function type>' to binary 'operator<<'
    8 |    cout << a += r - l + i << endl;
      |                 ~~~~~~~~~~^~~~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
int N, r, l, a;
cin >> N >> r >> l >> a >>;

int main() {
  for (int i = 0; i < N; i++) {
   cout << a += r - l + i << endl;
  }
}


Compiler output:
a.cc:4:1: error: 'cin' does not name a type
    4 | cin >> N >> r >> l >> a >>;
      | ^~~
a.cc: In function 'int main()':
a.cc:8:27: error: invalid operands of types 'int' and '<unresolved overloaded function type>' to binary 'operator<<'
    8 |    cout << a += r - l + i << endl;
      |                 ~~~~~~~~~~^~~~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
int N, r, l, a;
cin >> N >> r >> l >> a;

int main() {
  for (int i = 0; i < N; i++) {
   cout << a += r - l + i << endl;
  }
}


Compiler output:
a.cc:4:1: error: 'cin' does not name a type
    4 | cin >> N >> r >> l >> a;
      | ^~~
a.cc: In function 'int main()':
a.cc:8:27: error: invalid operands of types 'int' and '<unresolved overloaded function type>' to binary 'operator<<'
    8 |    cout << a += r - l + i << endl;
      |                 ~~~~~~~~~~^~~~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
int N, r, l, a;
cin >> N >> r >> l >> a;

int main() {
  for (int i = 0; i < N; i++) {
   cout << a += r - l + N << endl;
  }
}


Compiler output:
a.cc:4:1: error: 'cin' does not name a type
    4 | cin >> N >> r >> l >> a;
      | ^~~
a.cc: In function 'int main()':
a.cc:8:27: error: invalid operands of types 'int' and '<unresolved overloaded function type>' to binary 'operator<<'
    8 |    cout << a += r - l + N << endl;
      |                 ~~~~~~~~~~^~~~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
int N, r, l, a;
cin >> N >> r >> l;

int main() {
  for (int i = 0; i < N; i++) {
   cout << a += r - l + N << endl;
  }
}


Compiler output:
a.cc:4:1: error: 'cin' does not name a type
    4 | cin >> N >> r >> l;
      | ^~~
a.cc: In function 'int main()':
a.cc:8:27: error: invalid operands of types 'int' and '<unresolved overloaded function type>' to binary 'operator<<'
    8 |    cout << a += r - l + N << endl;
      |                 ~~~~~~~~~~^~~~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
int N, r, l;
cin >> N >> r >> l;

int main() {
  for (int i = 0; i < N; i++) {
   cout << r - l + N << endl;
  }
}


Compiler output:
a.cc:4:1: error: 'cin' does not name a type
    4 | cin >> N >> r >> l;
      | ^~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
int N, r, l;
  cin >> N >> r >> l;

int main() {
  for (int i = 0; i < N; i++) {
   cout << r - l + N << endl;
  }
}


Compiler output:
a.cc:4:3: error: 'cin' does not name a type
    4 |   cin >> N >> r >> l;
      |   ^~~
Language: C++

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

int main() {
  int N;
  cin >> N;
  
  for (int i = 0; i < N; i++) {
   cout >> r - l + N >> endl;
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:12: error: 'r' was not declared in this scope
    9 |    cout >> r - l + N >> endl;
      |            ^
a.cc:9:16: error: 'l' was not declared in this scope
    9 |    cout >> r - l + N >> endl;
      |                ^
Language: C++

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


int main(){
  int N,l,r,sum;
  cin >> N;
  
  for(int i=0;i<N,i++){
    cin >> l >> r;
    sum=l-r+1;
  }
  
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:22: error: expected ';' before ')' token
    9 |   for(int i=0;i<N,i++){
      |                      ^
      |                      ;
Language: C++

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


int main(){
  int N,l,r,sum;
  cin >> N;
  
  for(i=0;i<N,i++){
    cin >> l >> r;
    sum=l-r+1;
  }
  
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:7: error: 'i' was not declared in this scope
    9 |   for(i=0;i<N,i++){
      |       ^
a.cc:9:18: error: expected ';' before ')' token
    9 |   for(i=0;i<N,i++){
      |                  ^
      |                  ;
Language: C++

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

int main() {
  int N;
  int l,r,seat_n;
  
  cin >> N;
  
  seat_n = 0;
  
  for(int i =0; i<N; i++){
    cin >> l, r;
    
    seat_n += r -l +1
  }
  
  cout << seat_n << endl;

  
}


Compiler output:
a.cc: In function 'int main()':
a.cc:15:22: error: expected ';' before '}' token
   15 |     seat_n += r -l +1
      |                      ^
      |                      ;
   16 |   }
      |   ~
Language: C++

#pragma GCC optimize("Ofast")
#include <bits/stdc++.h>
#define rep(i,n) for(int i=0;i<n;i++)
#define cinf(n,x) for(int i=0;i<(n);i++)cin>>x[i];
#define max3(a,b,c) max(max(a,b),c)
#define min3(a,b,c) min(min(a,b),c)
#define ft first
#define sc second
#define pb push_back
#define lb lower_bound
#define ub upper_bound
#define all(v) (v).begin(),(v).end()
#define mod 1000000007
using namespace std;
typedef long long ll;
template<class T> using V=vector<T>;
using Graph = vector<vector<int>>;
using P=pair<ll,ll>;
typedef unsigned long long ull;
typedef long double ldouble;
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return true; } return false; }
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return true; } return false; }
//V,P(大文字)使用不可

const ll INF=1000000000000000000;

signed main(){
    int n;
    cin>>n;
    ll ans=0;
    while(n--){
        ll l,r;
        cin>>l>>r;
        ans+=r-l+1;
    }
}
cout<<ans<<endl;

Compiler output:
a.cc:37:1: error: 'cout' does not name a type
   37 | cout<<ans<<endl;
      | ^~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
  int a;
  cin >> a;
  while(a > 0){
    int b,c,d;
    int e = 100000;
    cin >> b >> c;
    d = c - b;
    e -= d;
    a--;
  }
  cout << d << endl;
}
    

Compiler output:
a.cc: In function 'int main()':
a.cc:14:11: error: 'd' was not declared in this scope
   14 |   cout << d << endl;
      |           ^
Language: C

#include<stdio.h>

int main()
{
    int num;
  	int l,r;
  	int roop;
    
    scanf("%d",&roop);
    num = 0;
    for (i = 1;i < num;i++)
    {
        scanf("%d %d",&l,&r);
        num += r -l; 
    }
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:11:10: error: 'i' undeclared (first use in this function)
   11 |     for (i = 1;i < num;i++)
      |          ^
main.c:11:10: note: each undeclared identifier is reported only once for each function it appears in
Language: C++

#include <bits/stdc++.h>
#include <math.h>
#define rep(i, n) for(int64_t i = 0; i < n; ++i)
using namespace std;

int main() {
  int n, s = 0;
  cin >> n;
  rep(i, n){
    iint a, b;
    cin >> a >> b;
    s += b-a+1;
  }
  cout << s << endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:5: error: 'iint' was not declared in this scope; did you mean 'uint'?
   10 |     iint a, b;
      |     ^~~~
      |     uint
a.cc:11:12: error: 'a' was not declared in this scope
   11 |     cin >> a >> b;
      |            ^
a.cc:11:17: error: 'b' was not declared in this scope
   11 |     cin >> a >> b;
      |                 ^
Language: C++

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

int main() {
  int N;
  cin >> N;
  int x = 0;
  
  for (int i = 0; i < N; i++) {
    int l,r;
    cin >> l >> r;
    x = r - l + 1;
    x += x
    cout << x << endl;
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:13:11: error: expected ';' before 'cout'
   13 |     x += x
      |           ^
      |           ;
   14 |     cout << x << endl;
      |     ~~~~
Language: C++

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

int main() {
  int N;
  cin >> N;
  sum = 0;
  
  for (int i = 0; i < N; i++) {
    int l,r;
    cin >> l >> r;
    x = r - l + 1;
    sum += x;
    cout << sum << emdl;
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:3: error: 'sum' was not declared in this scope
    7 |   sum = 0;
      |   ^~~
a.cc:12:5: error: 'x' was not declared in this scope
   12 |     x = r - l + 1;
      |     ^
a.cc:14:20: error: 'emdl' was not declared in this scope
   14 |     cout << sum << emdl;
      |                    ^~~~
Language: C++

#include <iostream>

using namespace std;

int main(){
    int N, inicio, fim, total=1;

    cin>>N;

        for (int i = 0; i < N; ++i){
        cin>>inicio;
        cin>>fim;
        total += fim - ini;
    }
    cout<<total;

    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:24: error: 'ini' was not declared in this scope; did you mean 'int'?
   13 |         total += fim - ini;
      |                        ^~~
      |                        int
Language: C++

#include <iostream>

using namespace std;

int main(){
    int N, inicio, fim, total=1;

    cin>>N;

        for (int i = 0; i < n; ++i){
        cin>>inicio;
        cin>>fim;
        total += fim - inicio;
    }
    cout<<total;

    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:29: error: 'n' was not declared in this scope
   10 |         for (int i = 0; i < n; ++i){
      |                             ^
Language: C++

#include <iostream>

using namespace std;

int main(){
    int N, inicio, fim, total=1;

    cin>>N;

        for (int i = 0; i < n; ++i){
        cin>>inicio;
        cin>>fim;
        total += fim - ini;
    }
    cout<<total;

    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:29: error: 'n' was not declared in this scope
   10 |         for (int i = 0; i < n; ++i){
      |                             ^
a.cc:13:24: error: 'ini' was not declared in this scope; did you mean 'int'?
   13 |         total += fim - ini;
      |                        ^~~
      |                        int
Language: C++

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

int count(int begin , int end){  
	return end - begin +1;
}
int main(){
  int s;
  cin >> s;
  int res=0;
  for (int i = 0; i < s; i++){		
    int beginNum,endNum;
    cin >>beginNum >> endNum;
 	int len =count(beginNum,endNum);
    res+=len;
  }
	cout <<res<<endl; 


Compiler output:
a.cc: In function 'int main()':
a.cc:17:26: error: expected '}' at end of input
   17 |         cout <<res<<endl;
      |                          ^
a.cc:7:11: note: to match this '{'
    7 | int main(){
      |           ^
Language: C++

int main() {
  int N;
  cin >> N;

  int total = 0;

  for (int i = 0; i < N; i++) {
      int l;
      int r;
      cin >> l >> r;
      total += r-l+1;
}
cout << total << endl;

}

Compiler output:
a.cc: In function 'int main()':
a.cc:3:3: error: 'cin' was not declared in this scope
    3 |   cin >> N;
      |   ^~~
a.cc:13:1: error: 'cout' was not declared in this scope
   13 | cout << total << endl;
      | ^~~~
a.cc:13:18: error: 'endl' was not declared in this scope
   13 | cout << total << endl;
      |                  ^~~~
Language: C++

#include <bits/stdc++.h>//万能文件头
using namespace std;
int main(){
    int n;
    int l,r,ans;//按照题定义
    cin>>n;//输入
    for(int i=1;i<=n;i++){
        cin>>l>>r;//输入公式里两个数
        ans+=r-l+1;//套公式环节
    }
    cout<<ans<<endl;//输出结果
}
公式大法好

Compiler output:
a.cc:13:1: error: '\U0000516c\U00005f0f\U00005927\U00006cd5\U0000597d' does not name a type
   13 | 公式大法好
      | ^~~~~~~~~~
Language: C++

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

int main() {

  int N,sum=0; cin>>N;
  pair<int,int> p;
  vector<pair> P;
  for(int i=0; i<N; i++){
    cin>>P.at(i).first>>P.at(i).second;}
  for(int i=0; i<N; i++){
    sum+=(P.at(i).second-P.at(i).first+1);}
  
  cout<<sum<<endl;

}





Compiler output:
a.cc: In function 'int main()':
a.cc:8:14: error: type/value mismatch at argument 1 in template parameter list for 'template<class _Tp, class _Alloc> class std::vector'
    8 |   vector<pair> P;
      |              ^
a.cc:8:14: note:   expected a type, got 'pair'
a.cc:8:14: error: template argument 2 is invalid
a.cc:10:12: error: request for member 'at' in 'P', which is of non-class type 'int'
   10 |     cin>>P.at(i).first>>P.at(i).second;}
      |            ^~
a.cc:10:27: error: request for member 'at' in 'P', which is of non-class type 'int'
   10 |     cin>>P.at(i).first>>P.at(i).second;}
      |                           ^~
a.cc:12:13: error: request for member 'at' in 'P', which is of non-class type 'int'
   12 |     sum+=(P.at(i).second-P.at(i).first+1);}
      |             ^~
a.cc:12:28: error: request for member 'at' in 'P', which is of non-class type 'int'
   12 |     sum+=(P.at(i).second-P.at(i).first+1);}
      |                            ^~
Language: C++

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

int main() {

  int N,sum=0; cin>>N;
  pair<int,int> p;
  vector<p> P;
  for(int i=0; i<N; i++){
    cin>>P.at(i).first>>P.at(i).second;}
  for(int i=0; i<N; i++){
    sum+=(P.at(i).second-P.at(i).first+1);}
  
  cout<<sum<<endl;

}





Compiler output:
a.cc: In function 'int main()':
a.cc:8:11: error: type/value mismatch at argument 1 in template parameter list for 'template<class _Tp, class _Alloc> class std::vector'
    8 |   vector<p> P;
      |           ^
a.cc:8:11: note:   expected a type, got 'p'
a.cc:8:11: error: template argument 2 is invalid
a.cc:10:12: error: request for member 'at' in 'P', which is of non-class type 'int'
   10 |     cin>>P.at(i).first>>P.at(i).second;}
      |            ^~
a.cc:10:27: error: request for member 'at' in 'P', which is of non-class type 'int'
   10 |     cin>>P.at(i).first>>P.at(i).second;}
      |                           ^~
a.cc:12:13: error: request for member 'at' in 'P', which is of non-class type 'int'
   12 |     sum+=(P.at(i).second-P.at(i).first+1);}
      |             ^~
a.cc:12:28: error: request for member 'at' in 'P', which is of non-class type 'int'
   12 |     sum+=(P.at(i).second-P.at(i).first+1);}
      |                            ^~
Language: C++

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

int main() {
  int n=0, ans=0;
  cin >> n;
  
  for (int i = 0; i < n; i++) {
    int l=0,r=0;
    cin >> l >> r;
    
    ans += (r-l+1)
  }
  
  cout << ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:19: error: expected ';' before '}' token
   12 |     ans += (r-l+1)
      |                   ^
      |                   ;
   13 |   }
      |   ~
Language: C++

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

int main (){
  
  int N;
  int sum = 0;
  cin >> N;
  
  for (int = i; i < N; i++){
    
    int l, r;
    cin >> l >> r;
    sum += r - l + 1;
    
  }
  
  cout << sum << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:12: error: expected unqualified-id before '=' token
   10 |   for (int = i; i < N; i++){
      |            ^
a.cc:10:11: error: expected ';' before '=' token
   10 |   for (int = i; i < N; i++){
      |           ^~
      |           ;
a.cc:10:12: error: expected primary-expression before '=' token
   10 |   for (int = i; i < N; i++){
      |            ^
a.cc:10:14: error: 'i' was not declared in this scope
   10 |   for (int = i; i < N; i++){
      |              ^
a.cc:10:22: error: expected ')' before ';' token
   10 |   for (int = i; i < N; i++){
      |       ~              ^
      |                      )
a.cc:10:24: error: 'i' was not declared in this scope
   10 |   for (int = i; i < N; i++){
      |                        ^
Language: C++

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

int main() {
  
  int n, 
  cin >> n;
  
  int sum = 0;
  
   rep(i, n) {
   int l, r;
   cin >> l >> r;
    
    cout << sum + r - l++ << endl;
    }
   }
  } 

Compiler output:
a.cc: In function 'int main()':
a.cc:8:7: error: expected initializer before '>>' token
    8 |   cin >> n;
      |       ^~
a.cc: At global scope:
a.cc:19:3: error: expected declaration before '}' token
   19 |   }
      |   ^
Language: C++

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

int main() {
  
  int N, L, R, sum;
  cin >> L >> R >> N >> sum;
  
   rep(i, 1000) {
  
   if(i == L){
    cout << sum + r - l++ << endl;
     }

   

Compiler output:
a.cc: In function 'int main()':
a.cc:13:19: error: 'r' was not declared in this scope
   13 |     cout << sum + r - l++ << endl;
      |                   ^
a.cc:13:23: error: 'l' was not declared in this scope
   13 |     cout << sum + r - l++ << endl;
      |                       ^
a.cc:14:7: error: expected '}' at end of input
   14 |      }
      |       ^
a.cc:10:17: note: to match this '{'
   10 |    rep(i, 1000) {
      |                 ^
a.cc:14:7: error: expected '}' at end of input
   14 |      }
      |       ^
a.cc:5:12: note: to match this '{'
    5 | 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 N, L, R;
  cin >> L >> R >> N;
  
   rep(i, N) {
  
   if(i == A){
     cout << i << endl;
   }
  
   else if(i == B){
     cout << i << endl;
     break;
   }
  }
 }


Compiler output:
a.cc: In function 'int main()':
a.cc:12:12: error: 'A' was not declared in this scope
   12 |    if(i == A){
      |            ^
a.cc:16:17: error: 'B' was not declared in this scope
   16 |    else if(i == B){
      |                 ^
Language: C++

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

int main() {
  
  int N, A, B;
  cin >> L >> R >> N;
  
   rep(i, N) {
  
   if(i == A){
     cout << i << endl;
   }
  
   else if(i == B){
     cout << i << endl;
     break;
   }
  }
 }


Compiler output:
a.cc: In function 'int main()':
a.cc:8:10: error: 'L' was not declared in this scope
    8 |   cin >> L >> R >> N;
      |          ^
a.cc:8:15: error: 'R' was not declared in this scope
    8 |   cin >> L >> R >> N;
      |               ^
Language: C++

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

int main() {
  int N, l, r, x;
  x =0;
  cin >> N, l, r;
  
  for (int i =0; i < N; i++;) {
    x += l - r + 1;
    }
    cout << x << endl;
  }
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:28: error: expected ')' before ';' token
    9 |   for (int i =0; i < N; i++;) {
      |       ~                    ^
      |                            )
a.cc:9:29: error: expected primary-expression before ')' token
    9 |   for (int i =0; i < N; i++;) {
      |                             ^
a.cc: At global scope:
a.cc:14:3: error: expected unqualified-id before 'return'
   14 |   return 0;
      |   ^~~~~~
a.cc:15:1: error: expected declaration before '}' token
   15 | }
      | ^
Language: C++

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

int main() {
	int num;
    cin >> num;
    
    int ans = 0;
    for(int i = 0; i < num; i++) {
    	int from, to;
        cin >> from >> to;
        ans += (to - from + 1)
    
    }
    cout << ans << endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:31: error: expected ';' before '}' token
   12 |         ans += (to - from + 1)
      |                               ^
      |                               ;
   13 | 
   14 |     }
      |     ~
Language: C++

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

int main() {
  int n,count,l[200000],r[200000];
  cin >> n;
  for(int i = 0; i < n; i++){
    cin >> l[i] >> r[i];
  }
  for(int j = 0; j < n; j++)[
    count += r[j]-l[j]+1;
  }
  cout << count << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:10: error: expected ',' before '+=' token
   11 |     count += r[j]-l[j]+1;
      |          ^~~
      |          ,
a.cc:11:11: error: expected identifier before '+=' token
   11 |     count += r[j]-l[j]+1;
      |           ^~
a.cc:11:25: error: expected ']' before ';' token
   11 |     count += r[j]-l[j]+1;
      |                         ^
      |                         ]
a.cc: In lambda function:
a.cc:11:25: error: expected '{' before ';' token
a.cc: At global scope:
a.cc:13:3: error: 'cout' does not name a type
   13 |   cout << count << endl;
      |   ^~~~
a.cc:14:1: error: expected declaration before '}' token
   14 | }
      | ^
Language: C++

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

int main() {
  int n,count,l[200000],r[200000];
  cin >> n;
  for(int i = 0; i < n; i++){
    cin >> l[i] >> r[i];
  }
  for(int j = 0; j < n; j++)[
    count =+ r[j]-l[j]+1;
  }
  cout << count << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:25: error: expected ',' before ';' token
   11 |     count =+ r[j]-l[j]+1;
      |                         ^
      |                         ,
a.cc:11:25: error: expected identifier before ';' token
a.cc:11:25: error: expected ']' before ';' token
   11 |     count =+ r[j]-l[j]+1;
      |                         ^
      |                         ]
a.cc: In lambda function:
a.cc:11:25: error: expected '{' before ';' token
a.cc: At global scope:
a.cc:13:3: error: 'cout' does not name a type
   13 |   cout << count << endl;
      |   ^~~~
a.cc:14:1: error: expected declaration before '}' token
   14 | }
      | ^
Language: C++

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

int main() {
  int n,count,l[200000],r[200000];
  cin >> n;
  for(int i = 0; i < n; i++){
    cin >> l[i] >> r[i];
  }
  for(int j = 0; j < n; j++)[
    count =+ r[j]-l[j]+1;
  }
  cout << count << endl;
}

Compiler output:
a.cc:1:10: fatal error: bits/srdc++.h: No such file or directory
    1 | #include <bits/srdc++.h>
      |          ^~~~~~~~~~~~~~~
compilation terminated.
Language: C++

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

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




Compiler output:
a.cc: In function 'int main()':
a.cc:11:15: error: expected ';' before '}' token
   11 |     sum+=b-a+1
      |               ^
      |               ;
   12 |   }
      |   ~
Language: C++

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

int main() {

  int N, l, r, ans;
  ans = 0
  cin >> N;
  
  for (int i = 0; i < N; i++) {
    cin >> l >> r;
    ans += r - l + 1;
  }
  
  cout << ans << endl;

}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:10: error: expected ';' before 'cin'
    7 |   ans = 0
      |          ^
      |          ;
    8 |   cin >> N;
      |   ~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  int N;
  cin >> N;
  int l[N], r[N];
  int sum = 0;
  for ( i = 0; i < N; i++ ) {
    sum = sum + ( r[i] - l[i] + 1 );
    i++;
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:9: error: 'i' was not declared in this scope
    9 |   for ( i = 0; i < N; i++ ) {
      |         ^
Language: C++

#include <iostream>

using namespace std;

int main()
{
    int ans=0;
    int n;
    cin>>n;
    int arr1[n];
    int arr2[n];
    for(int i=0;i<n;i++)
    {
     cin>>arr1[i]>>arr2[i];   
    }   
    ans=arr1[i]-arr2[i];
    cout<<anw+1<<' ';
    
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:16:14: error: 'i' was not declared in this scope
   16 |     ans=arr1[i]-arr2[i];
      |              ^
a.cc:17:11: error: 'anw' was not declared in this scope; did you mean 'ans'?
   17 |     cout<<anw+1<<' ';
      |           ^~~
      |           ans
Language: C++

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

int main() {
  int N;
  cin >> N ;
  int all;
  
  for (int i = 0; i < N; i++) {
    int l,r;
    cin >> l >> r ;
    if( l == r ){
      all +=1; } else {
      all = all+(r-l)+1;
    }}
  cout << all << endl;
    
  }

}


Compiler output:
a.cc:20:1: error: expected declaration before '}' token
   20 | }
      | ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
 	int n, count=0;
 	cin >> n;

 	for(int i=0;i<n;i++){
 		int l,r;
 		cin >> l >> r;
 		count += r-l+1
 	}
 	cout << count << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:31: error: expected ';' before '}' token
   11 |                 count += r-l+1
      |                               ^
      |                               ;
   12 |         }
      |         ~
Language: C++

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

int main() {
  int N, x = 0;
  cin >> N;

  for (int i = 0; i < N; i++) {
    int = l,r;
    cin >> l >> r;
	x += r - l + 1;
    cout << x  << endl;
  }

}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:9: error: expected unqualified-id before '=' token
    9 |     int = l,r;
      |         ^
a.cc:10:12: error: 'l' was not declared in this scope
   10 |     cin >> l >> r;
      |            ^
a.cc:10:17: error: 'r' was not declared in this scope
   10 |     cin >> l >> r;
      |                 ^
Language: C++

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

int main() {
  int N, x = 0;
  cin >> N;

  for (int i = 0; i < N; i++) {
    int = l,r;
    cin >> l >> r;
	x += r - l + 1;
  }
    cout << x  << endl;

}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:9: error: expected unqualified-id before '=' token
    9 |     int = l,r;
      |         ^
a.cc:10:12: error: 'l' was not declared in this scope
   10 |     cin >> l >> r;
      |            ^
a.cc:10:17: error: 'r' was not declared in this scope
   10 |     cin >> l >> r;
      |                 ^
Language: C++

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

int main() {
  int N;
  cin >> N;

  for (int i = 0; i < N; i++) {
    int x = 0,l,r;
    cin >> l >> r;
	x += r - l + 1;
  }
    cout << x  << endl;

}


Compiler output:
a.cc: In function 'int main()':
a.cc:13:13: error: 'x' was not declared in this scope
   13 |     cout << x  << endl;
      |             ^
Language: C++

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

int main() {
 int N, A ;
  cin >> N ;
  A = 0
  rep(i, N) {
  int l , r;
  cin >> l >> r;
  A += r-l+1
  }
cout  << A << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:8: error: expected ';' before 'for'
    8 |   A = 0
      |        ^
      |        ;
a.cc:9:7: error: 'i' was not declared in this scope
    9 |   rep(i, N) {
      |       ^
a.cc:3:35: note: in definition of macro 'rep'
    3 | #define rep(i, n) for (int i = 0; i < (int)(n); i++)
      |                                   ^
Language: C++

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

int main(){
int n;
  cin >> n;
  int ans=0;
  int a,b
  rep(i,n){
    cin >> a >> b;
    ans += b-a+1;
  }
  cout << ans << endl;

	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:3:19: error: expected initializer before 'for'
    3 | #define rep(i, n) for (int i=0; i<(int)(n); i++)
      |                   ^~~
a.cc:10:3: note: in expansion of macro 'rep'
   10 |   rep(i,n){
      |   ^~~
a.cc:10:7: error: 'i' was not declared in this scope
   10 |   rep(i,n){
      |       ^
a.cc:3:33: note: in definition of macro 'rep'
    3 | #define rep(i, n) for (int i=0; i<(int)(n); i++)
      |                                 ^
Language: C++

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

int main() {

  int sum,N;
  int l,r;
  sum = 0;
  
  cin >> N;
  
  for(i=0;i<N;i++){
	cin >> l >> r;
    sum += l + r;
  }
  cout << sum <<endl;
}
  
  
  

Compiler output:
a.cc: In function 'int main()':
a.cc:12:7: error: 'i' was not declared in this scope
   12 |   for(i=0;i<N;i++){
      |       ^
Language: C++

#include <bits/stdc++.h>
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define rep2(i, s, n) for (int i = (s); i < (int)(n); i++)
using namespace std;

int main() {
   int n;
   cin >> n;
   int ans = 0;
   rep(i,n){
		int l,r; 
    cin　>> l >> r;
    ans += r - l + 1;
	}
	 cout << ans << endl;
}

Compiler output:
a.cc:12:5: error: extended character 　 is not valid in an identifier
   12 |     cin　>> l >> r;
      |     ^
a.cc: In function 'int main()':
a.cc:12:5: error: 'cin\U00003000' was not declared in this scope
   12 |     cin　>> l >> r;
      |     ^~~~~
Language: C++

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

int main() {
  int N;
  cin>> N;
  for (int i=0;i<N;i++){
    int a,b,c;
    cin >>a>>b;
    c += b-a+1;
  }
  cout<<c<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:9: error: 'c' was not declared in this scope
   12 |   cout<<c<<endl;
      |         ^
Language: C++

#include <cstdio > int N,res,l,r; int main() { scanf("%d",&N); for(int i=0;i<N;i++)scanf("%d%d",&l,&r),res+=r-l+1; printf("%d\n",res); }

Compiler output:
a.cc:1:20: warning: extra tokens at end of #include directive
    1 | #include <cstdio > int N,res,l,r; int main() { scanf("%d",&N); for(int i=0;i<N;i++)scanf("%d%d",&l,&r),res+=r-l+1; printf("%d\n",res); }
      |                    ^~~
a.cc:1:10: fatal error: cstdio : No such file or directory
    1 | #include <cstdio > int N,res,l,r; int main() { scanf("%d",&N); for(int i=0;i<N;i++)scanf("%d%d",&l,&r),res+=r-l+1; printf("%d\n",res); }
      |          ^~~~~~~~~
compilation terminated.
Language: C++

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

int main()
{
  int N, l, r=0, sum;
  cin>> N>> l>> r;
  for(int i=0;i<N;i++)
  {
    sum+=r-l+1
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:15: error: expected ';' before '}' token
   10 |     sum+=r-l+1
      |               ^
      |               ;
   11 |   }
      |   ~
Language: C++

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

int main()
{
  int N, l, r;
  cin>> N>> l>> r;
  for(int i=0;i<N;i++)
  {
    cout<< r.at(i)-l.at(i)+1<< endl;
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:14: error: request for member 'at' in 'r', which is of non-class type 'int'
   10 |     cout<< r.at(i)-l.at(i)+1<< endl;
      |              ^~
a.cc:10:22: error: request for member 'at' in 'l', which is of non-class type 'int'
   10 |     cout<< r.at(i)-l.at(i)+1<< endl;
      |                      ^~
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  int N;
  cin >> N;
  int A = 0;
  
  for (int i = 0, i < N, i++){
    int l, r;
    cin >> l >> r;
    
    A += r - l +1;
  }
  
  cout << A << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:20: error: expected ';' before '<' token
    9 |   for (int i = 0, i < N, i++){
      |                    ^~
      |                    ;
a.cc:9:21: error: expected primary-expression before '<' token
    9 |   for (int i = 0, i < N, i++){
      |                     ^
a.cc:9:29: error: expected ';' before ')' token
    9 |   for (int i = 0, i < N, i++){
      |                             ^
      |                             ;
Language: C++

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

int main(){
  int N, sum =0
  bool all = false;
  cin >> N;
  for (int I = 0; i<N; i++){
    int l.r;
    cin > l >> r;
    sum += r - l + 1;
  }
  cout << sum << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:3: error: expected ',' or ';' before 'bool'
    6 |   bool all = false;
      |   ^~~~
a.cc:8:19: error: 'i' was not declared in this scope
    8 |   for (int I = 0; i<N; i++){
      |                   ^
a.cc:9:10: error: expected initializer before '.' token
    9 |     int l.r;
      |          ^
a.cc:10:11: error: 'l' was not declared in this scope
   10 |     cin > l >> r;
      |           ^
a.cc:10:16: error: 'r' was not declared in this scope
   10 |     cin > l >> r;
      |                ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main(){
  int N; cin >> N;
  int ans =0
    for(int i = 0 ; i < N; i++){
      int l,r;
      cin >> l >> r;
      ans += (r - l + 1);
    }
  cout << ans << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:5: error: expected ',' or ';' before 'for'
    6 |     for(int i = 0 ; i < N; i++){
      |     ^~~
a.cc:6:21: error: 'i' was not declared in this scope
    6 |     for(int i = 0 ; i < N; i++){
      |                     ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main(){
  int N; cin >> N;
  int ans =0
  for (int i = 0 ; i < N ;i++){
      int l,r;
      cin >> l >> r;
      ans += (r - l + 1);
    }
  cout << ans << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:3: error: expected ',' or ';' before 'for'
    6 |   for (int i = 0 ; i < N ;i++){
      |   ^~~
a.cc:6:20: error: 'i' was not declared in this scope
    6 |   for (int i = 0 ; i < N ;i++){
      |                    ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main(){
  int N; cin >> N;
  int ans =0
    for (int i = 0 , i < N, i++){
      int l,r;
      cin >> l >> r;
      ans += (r - l + 1);
    }
  cout << ans << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:5: error: expected ',' or ';' before 'for'
    6 |     for (int i = 0 , i < N, i++){
      |     ^~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main(){
  int N; cin >> N;
  int ans =0
    for (int i = 0 ; i < N; i++){
      int l,r;
      cin >> l >> r;
      ans += (r - l + 1);
    }
  cout << ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:5: error: expected ',' or ';' before 'for'
    6 |     for (int i = 0 ; i < N; i++){
      |     ^~~
a.cc:6:22: error: 'i' was not declared in this scope
    6 |     for (int i = 0 ; i < N; i++){
      |                      ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main(){
  int N,l,r;
  cin >> N >> l >> r;
  for(int i=0;i<N;i++){
    


Compiler output:
a.cc: In function 'int main()':
a.cc:6:24: error: expected '}' at end of input
    6 |   for(int i=0;i<N;i++){
      |                       ~^
a.cc:6:24: error: expected '}' at end of input
a.cc:3:11: note: to match this '{'
    3 | int main(){
      |           ^
Language: C++

#include <iostream>
using namespace std;
int main(){
  int n;cin>>n;
  int ans = 0;
  for(int i = 0; n > i; i++){
    int a,b;cin>>a>>b;
    ans += b-a+1 << endl;
  }
  cout << ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:18: error: invalid operands of types 'int' and '<unresolved overloaded function type>' to binary 'operator<<'
    8 |     ans += b-a+1 << endl;
      |            ~~~~~~^~~~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  int N;
  cin >> N;
  int sum = 0;
  int i = 0;
  while ( i < N; ) {
    int a,b;
    cin >> a >> b;
    sum + b - a + 1;
    i++;
  }
  cout << sum << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:16: error: expected ')' before ';' token
    9 |   while ( i < N; ) {
      |         ~      ^
      |                )
a.cc:9:18: error: expected primary-expression before ')' token
    9 |   while ( i < N; ) {
      |                  ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  int N;
  cin >> N;
  int sum = 0;
  int i = 0;
  while ( i < N; ) {
    int a,b;
    cin >> a >> b;
    sum + b - a + 1;
    i++
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:16: error: expected ')' before ';' token
    9 |   while ( i < N; ) {
      |         ~      ^
      |                )
a.cc:9:18: error: expected primary-expression before ')' token
    9 |   while ( i < N; ) {
      |                  ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  int N;
  cin >> N;
  int sum = 0;
  for ( int i = 0 , i < N , i++ ) {
    int a,b;
    cin >> a >> b;
    sum + b - a + 1;
  }
  cout << sum;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:22: error: expected ';' before '<' token
    8 |   for ( int i = 0 , i < N , i++ ) {
      |                      ^~
      |                      ;
a.cc:8:23: error: expected primary-expression before '<' token
    8 |   for ( int i = 0 , i < N , i++ ) {
      |                       ^
a.cc:8:32: error: expected ';' before ')' token
    8 |   for ( int i = 0 , i < N , i++ ) {
      |                                ^~
      |                                ;
Language: C++

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

int main(){
  int N,l,r,k;
  k = 0;
  cin >> N;
  for(j = 0; j < N ;j++){
    cin >> l >> r;
    k += (r-l+1);
  }
  cout << k << endl;
}      
    
    

Compiler output:
a.cc: In function 'int main()':
a.cc:8:7: error: 'j' was not declared in this scope
    8 |   for(j = 0; j < N ;j++){
      |       ^
Language: C++

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

int main {
  int N, i;
  cin >> N;
  int sum;
  
  for (i = 0; i < N; i++) {
    int l, r;
    cin >> l >> r;
    sum += (l - r + 1);
  }
  
  cout << sum << endl;
}

Compiler output:
a.cc:4:5: error: cannot declare '::main' to be a global variable
    4 | int main {
      |     ^~~~
a.cc:5:3: error: expected primary-expression before 'int'
    5 |   int N, i;
      |   ^~~
a.cc:5:3: error: expected '}' before 'int'
a.cc:4:10: note: to match this '{'
    4 | int main {
      |          ^
a.cc:6:3: error: 'cin' does not name a type
    6 |   cin >> N;
      |   ^~~
a.cc:9:3: error: expected unqualified-id before 'for'
    9 |   for (i = 0; i < N; i++) {
      |   ^~~
a.cc:9:15: error: 'i' does not name a type
    9 |   for (i = 0; i < N; i++) {
      |               ^
a.cc:9:22: error: 'i' does not name a type
    9 |   for (i = 0; i < N; i++) {
      |                      ^
a.cc:15:3: error: 'cout' does not name a type
   15 |   cout << sum << endl;
      |   ^~~~
a.cc:16:1: error: expected declaration before '}' token
   16 | }
      | ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  int N;
  int ans = 0;
  cin >> N;
  
  for (int i =　0; i < N; i++) {
    int l, r;
    cin >> l >> r;
    ans += (r - l + 1);
  }
  cout << ans << endl;
}

Compiler output:
a.cc:9:15: error: extended character 　 is not valid in an identifier
    9 |   for (int i =　0; i < N; i++) {
      |               ^
a.cc: In function 'int main()':
a.cc:9:15: error: '\U000030000' was not declared in this scope
    9 |   for (int i =　0; i < N; i++) {
      |               ^~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  int N, ans;
  cin >> N;
  
  for (int i =　0; i < N; i++) {
    int l, r;
    cin >> l >> r;
    ans += (r - l + 1);
  }
  cout << ans << endl;
}

Compiler output:
a.cc:8:15: error: extended character 　 is not valid in an identifier
    8 |   for (int i =　0; i < N; i++) {
      |               ^
a.cc: In function 'int main()':
a.cc:8:15: error: '\U000030000' was not declared in this scope
    8 |   for (int i =　0; i < N; i++) {
      |               ^~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  int N, ans;
  cin >> N;
  
  for (i=0; i < N; i++) {
    int l, r;
    cin >> l >> r;
    ans += (r - l + 1);
  }
  cout << ans << 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 < N; i++) {
      |        ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  int N, ans;
  cin >> N;
  
  for (i=0; i < N; i++) {
    int l, r;
    cin >> l >> r;
    ans += r - l + 1;
  }
  cout << ans << 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 < N; i++) {
      |        ^
Language: C++

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

int main() {
  int N;
  cin >> N;
  
  int l, r;
  int s=0;
  
  for (int i=0; i<N; i++) {
    cin >> l >> r;
    x += r-l+1
  }
  
  cout << x <<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:5: error: 'x' was not declared in this scope
   13 |     x += r-l+1
      |     ^
a.cc:16:11: error: 'x' was not declared in this scope
   16 |   cout << x <<endl;
      |           ^
Language: C++

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

int main() {
	int N,a;
  	cin >> N;
  
  	for (i=0; i < N; i++) {
    	int l, r;
      	cin >> l >> r;
      	a += r - l + 1;
    }
  	cout << a << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:14: error: 'i' was not declared in this scope
    8 |         for (i=0; i < N; i++) {
      |              ^
Language: C++

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

int main() {
	int N,a;
  	cin >> N;
  
  	for (i=0; i < N, i++) {
    	int l, r;
      	cin >> l >> r;
      	a += r - l + 1
    }
  	cout << a << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:14: error: 'i' was not declared in this scope
    8 |         for (i=0; i < N, i++) {
      |              ^
a.cc:8:29: error: expected ';' before ')' token
    8 |         for (i=0; i < N, i++) {
      |                             ^
      |                             ;
a.cc:11:23: error: expected ';' before '}' token
   11 |         a += r - l + 1
      |                       ^
      |                       ;
   12 |     }
      |     ~
Language: C++

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

int main() {
	int N,a;
  	cin >> N;
  
  	if(i=0; i < N, i++)	{
    	int l, r;
      	cin >> l >> r;
      	a += r - l + 1
    }
  	cout << a << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:12: error: 'i' was not declared in this scope
    8 |         if(i=0; i < N, i++)     {
      |            ^
a.cc:11:23: error: expected ';' before '}' token
   11 |         a += r - l + 1
      |                       ^
      |                       ;
   12 |     }
      |     ~
Language: C

    #include <stdio.h>
    #include <stdlib.h>
     
    int main() {
      
      int num = 0;
      int start = 0;
      int finish = 0;
      int total = 0;
      
      scanf("%d", &num);
      
      for(int i = 0; i < num; i+;) {
        scanf("%d %d", &start, &finish);
        
        total += (finish - start)+1; 
      }
      
      printf("%d", &total);
      
      return 0;
    }

Compiler output:
main.c: In function 'main':
main.c:13:33: error: expected expression before ';' token
   13 |       for(int i = 0; i < num; i+;) {
      |                                 ^
Language: C++

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

int main(){
  int N,l,r;
  cin >> N;
  int sum = 0;
  for(i=0;i<N;i++){
    cin >> l >> r;
    sum +=(r-l +1);
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:7: error: 'i' was not declared in this scope
    8 |   for(i=0;i<N;i++){
      |       ^
Language: C++

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

int main(){
  int N,l,r;
  cin >> N;
  int sum = 0;
  for(;i<N;){
    cin >> l >> r;
    sum +=(r-l +1);
  }
}

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

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

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

  for (int i = 0; i < N; i++) {
  int l, r;
  cin >> l >> r;
  A += (r - l + 1)
  }
  cout << A;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:11:19: error: expected ';' before '}' token
   11 |   A += (r - l + 1)
      |                   ^
      |                   ;
   12 |   }
      |   ~
Language: C++

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

int main(void) {
  int n, seats[100010] = {};
  int l, r;
  cin >> n;
  for (int i = 0; i < n; i++) {
    cin >> l >> r;
    seats[l]++;
    seats[r + 1]--;
  }
  for (int i = 1; i < 100005; i++) 
    seats[i] += seats[i - 1];
  
  int ans = 0;
  for (int i = 0; i < 100010; i++) ans += seats[i];
  
  cout << ans << endl;
  
  return 0;
}

Compiler output:
a.cc:1:10: fatal error: bits/sdtc++.h: No such file or directory
    1 | #include <bits/sdtc++.h>
      |          ^~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include "bits/sdtc++.h"
using namespace std;

int main(void) {
  int n, seats[100010] = {};
  int l, r;
  cin >> n;
  for (int i = 0; i < n; i++) {
    cin >> l >> r;
    seats[l]++;
    seats[r + 1]--;
  }
  for (int i = 1; i < 100005; i++) 
    seats[i] += seats[i - 1];
  
  int ans = 0;
  for (int i = 0; i < 100010; i++) ans += seats[i];
  
  cout << ans << endl;
  
  return 0;
}

Compiler output:
a.cc:1:10: fatal error: bits/sdtc++.h: No such file or directory
    1 | #include "bits/sdtc++.h"
      |          ^~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main(){
  int N, count = 0;
  cin >> N;
  
  for (int i = 0; i < N; i++){
    int k, l;
    cin >> K >> l;
    
    count += l - k + 1;
    
  }
  
  cout << count << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:12: error: 'K' was not declared in this scope
    9 |     cin >> K >> l;
      |            ^
Language: C++

#include <bits/stdc++.h>
using namespce std;
int main(){
  int N, count = 0;
  cin >> N;
  
  for (int i = 0; i < N; i++){
    int k, l;
    cin >> K >> l;
    
    count += l - k + 1;
    
  }
  
  cout << count << endl;
}

Compiler output:
a.cc:2:7: error: expected nested-name-specifier before 'namespce'
    2 | using namespce std;
      |       ^~~~~~~~
a.cc: In function 'int main()':
a.cc:5:3: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    5 |   cin >> N;
      |   ^~~
      |   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:9:12: error: 'K' was not declared in this scope
    9 |     cin >> K >> l;
      |            ^
a.cc:15:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   15 |   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:15:20: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   15 |   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 N, l, r, sum;
  sum = 0
  cin >> N;
  for (int i = 0; i < N; i++) {
  	cin >> l >> r;
    sum += r - l;
  }
  cout << sum << endl;
  // ここにプログラムを追記
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:10: error: expected ';' before 'cin'
    6 |   sum = 0
      |          ^
      |          ;
    7 |   cin >> N;
      |   ~~~
Language: C++

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

int main() {

  int = N;
  cin >> N;
  int sum =0;
  

  for (int i = 0; i < N; i++) {
    int = L, R;
    cin >> L >> R;
    sum += R-L+1;
  }
  
    cout << sum << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:7: error: expected unqualified-id before '=' token
    6 |   int = N;
      |       ^
a.cc:7:10: error: 'N' was not declared in this scope
    7 |   cin >> N;
      |          ^
a.cc:12:9: error: expected unqualified-id before '=' token
   12 |     int = L, R;
      |         ^
a.cc:13:12: error: 'L' was not declared in this scope
   13 |     cin >> L >> R;
      |            ^
a.cc:13:17: error: 'R' was not declared in this scope
   13 |     cin >> L >> R;
      |                 ^