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

a;b;c;main(){
  scanf("%d",&a);
  char d[a+1];
  scanf("%s",d);
  for(;a--;){
    d[7-a]=='I'?++b:--b;
    b>c?c=b:c=c;
  }
  printf("%d\n",c);
}

Compiler output:
main.c:1:1: warning: data definition has no type or storage class
    1 | a;b;c;main(){
      | ^
main.c:1:1: error: type defaults to 'int' in declaration of 'a' [-Wimplicit-int]
main.c:1:3: warning: data definition has no type or storage class
    1 | a;b;c;main(){
      |   ^
main.c:1:3: error: type defaults to 'int' in declaration of 'b' [-Wimplicit-int]
main.c:1:5: warning: data definition has no type or storage class
    1 | a;b;c;main(){
      |     ^
main.c:1:5: error: type defaults to 'int' in declaration of 'c' [-Wimplicit-int]
main.c:1:7: error: return type defaults to 'int' [-Wimplicit-int]
    1 | a;b;c;main(){
      |       ^~~~
main.c: In function 'main':
main.c:2:3: error: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
    2 |   scanf("%d",&a);
      |   ^~~~~
main.c:1:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
  +++ |+#include <stdio.h>
    1 | a;b;c;main(){
main.c:2:3: warning: incompatible implicit declaration of built-in function 'scanf' [-Wbuiltin-declaration-mismatch]
    2 |   scanf("%d",&a);
      |   ^~~~~
main.c:2:3: note: include '<stdio.h>' or provide a declaration of 'scanf'
main.c:7:14: error: lvalue required as left operand of assignment
    7 |     b>c?c=b:c=c;
      |              ^
main.c:9:3: error: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
    9 |   printf("%d\n",c);
      |   ^~~~~~
main.c:9:3: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:9:3: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
main.c:9:3: note: include '<stdio.h>' or provide a declaration of 'printf'
Language: C

a;b;c;d;main(){
  scanf("%d",&a);
  char d[a+1];
  scanf("%c",d);
  for(;a--;){
    d[7-a]=='I'?++b:--b;
    b>c?c=b:c=c;
  }
  printf("%d\n",c);
}

Compiler output:
main.c:1:1: warning: data definition has no type or storage class
    1 | a;b;c;d;main(){
      | ^
main.c:1:1: error: type defaults to 'int' in declaration of 'a' [-Wimplicit-int]
main.c:1:3: warning: data definition has no type or storage class
    1 | a;b;c;d;main(){
      |   ^
main.c:1:3: error: type defaults to 'int' in declaration of 'b' [-Wimplicit-int]
main.c:1:5: warning: data definition has no type or storage class
    1 | a;b;c;d;main(){
      |     ^
main.c:1:5: error: type defaults to 'int' in declaration of 'c' [-Wimplicit-int]
main.c:1:7: warning: data definition has no type or storage class
    1 | a;b;c;d;main(){
      |       ^
main.c:1:7: error: type defaults to 'int' in declaration of 'd' [-Wimplicit-int]
main.c:1:9: error: return type defaults to 'int' [-Wimplicit-int]
    1 | a;b;c;d;main(){
      |         ^~~~
main.c: In function 'main':
main.c:2:3: error: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
    2 |   scanf("%d",&a);
      |   ^~~~~
main.c:1:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
  +++ |+#include <stdio.h>
    1 | a;b;c;d;main(){
main.c:2:3: warning: incompatible implicit declaration of built-in function 'scanf' [-Wbuiltin-declaration-mismatch]
    2 |   scanf("%d",&a);
      |   ^~~~~
main.c:2:3: note: include '<stdio.h>' or provide a declaration of 'scanf'
main.c:7:14: error: lvalue required as left operand of assignment
    7 |     b>c?c=b:c=c;
      |              ^
main.c:9:3: error: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
    9 |   printf("%d\n",c);
      |   ^~~~~~
main.c:9:3: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:9:3: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
main.c:9:3: note: include '<stdio.h>' or provide a declaration of 'printf'
Language: C

a;b;c;d;main(){
  scanf("%d",&a);
  char d[a+1];
  scanf("%s",d);
  for(;a--;){
    d[7-a]=='I'?++b:--b;
    b>c?c=b:c=c;
  }
  printf("%d\n",c);
}

Compiler output:
main.c:1:1: warning: data definition has no type or storage class
    1 | a;b;c;d;main(){
      | ^
main.c:1:1: error: type defaults to 'int' in declaration of 'a' [-Wimplicit-int]
main.c:1:3: warning: data definition has no type or storage class
    1 | a;b;c;d;main(){
      |   ^
main.c:1:3: error: type defaults to 'int' in declaration of 'b' [-Wimplicit-int]
main.c:1:5: warning: data definition has no type or storage class
    1 | a;b;c;d;main(){
      |     ^
main.c:1:5: error: type defaults to 'int' in declaration of 'c' [-Wimplicit-int]
main.c:1:7: warning: data definition has no type or storage class
    1 | a;b;c;d;main(){
      |       ^
main.c:1:7: error: type defaults to 'int' in declaration of 'd' [-Wimplicit-int]
main.c:1:9: error: return type defaults to 'int' [-Wimplicit-int]
    1 | a;b;c;d;main(){
      |         ^~~~
main.c: In function 'main':
main.c:2:3: error: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
    2 |   scanf("%d",&a);
      |   ^~~~~
main.c:1:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
  +++ |+#include <stdio.h>
    1 | a;b;c;d;main(){
main.c:2:3: warning: incompatible implicit declaration of built-in function 'scanf' [-Wbuiltin-declaration-mismatch]
    2 |   scanf("%d",&a);
      |   ^~~~~
main.c:2:3: note: include '<stdio.h>' or provide a declaration of 'scanf'
main.c:7:14: error: lvalue required as left operand of assignment
    7 |     b>c?c=b:c=c;
      |              ^
main.c:9:3: error: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
    9 |   printf("%d\n",c);
      |   ^~~~~~
main.c:9:3: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:9:3: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
main.c:9:3: note: include '<stdio.h>' or provide a declaration of 'printf'
Language: C++

// ------------------------------------
// Date:2018/ 2/28
// Problem:ABC 052 IncrementDecrement b.cpp
//
// ------------------------------------

#include <bits/stdc++.h>

using namespace std;

#define EACH(i,a) for (auto&& i : a)
#define FOR(i,a,b) for(int i=(int)a;i<(int)b;++i)
#define RFOR(i,a,b) for(int i=(int)b-1;i>=(int)a;--i)
#define REP(i,n) FOR(i,0,n)
#define RREP(i,n) RFOR(i,0,n)
#define ALL(a) (a).begin(),(a).end()
#define debug(x) cerr << #x << ":" << x << endl

typedef long long ll;

static const int MOD = 1000000007;

int main()
{
  int N, ans;
  string S;
  cin >> N;
  ans = N;
  cin >> S;
  REP(i, S.size()) {
    if (S[i] == 'I') ++n;
    else             --n;
    ans = max(n, ans);
  }
  cout << ans << endl;
  return 0;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:31:24: error: 'n' was not declared in this scope
   31 |     if (S[i] == 'I') ++n;
      |                        ^
a.cc:32:24: error: 'n' was not declared in this scope
   32 |     else             --n;
      |                        ^
a.cc:33:15: error: 'n' was not declared in this scope
   33 |     ans = max(n, ans);
      |               ^
Language: C++

#include<iostream>
using namespace std;
int main(){
  int n, ans = 0; cin >> n;
  n ^= n;
  string s; cin >> s;
  for(char c : s)ans = max(ans, c == 'I' ? ++n : --n);
  cout << ans << endl;
  return 0;
｝

Compiler output:
a.cc: In function 'int main()':
a.cc:10:1: error: '\U0000ff5d' was not declared in this scope
   10 | ｝
      | ^~
a.cc:10:3: error: expected '}' at end of input
   10 | ｝
      |   ^
a.cc:3:11: note: to match this '{'
    3 | int main(){
      |           ^
Language: C++

#include <iostream>
#include <string>

using namespace std;

int main()
{
  int n, i, ans = 0, k = 0;
  string s;
  
  cin >> n >> s;

  for(i = 0; i < n; i++){
    if(s[i] == 'I'){
      k++;
      if(k > ans)ans = k;
    }
    else{
      k--;
    }
  }
  
  cout << ans << endl;

Compiler output:
a.cc: In function 'int main()':
a.cc:23:23: error: expected '}' at end of input
   23 |   cout << ans << endl;
      |                       ^
a.cc:7:1: note: to match this '{'
    7 | {
      | ^
Language: C++

#include <iostream>
#include <string>
int main(){
int N,X=0;
std::string S;
std::cin >> N >> S;
for(int i=0;i<N;i++){
 if(S[i]==I)
  X++;
 else
  X=X-1;
}
std::cout << X << std::endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:11: error: 'I' was not declared in this scope
    8 |  if(S[i]==I)
      |           ^
Language: C++

#include <iostream>
#include <string>
int main(){
int N,X=0;
std::string S;
std::cin >> N >> S;
for(int i=0;i<N;i++;){
 if(S[i]==I)
  X++;
 else
  X=X-1;
}
std::cout << X << std::endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:20: error: expected ')' before ';' token
    7 | for(int i=0;i<N;i++;){
      |    ~               ^
      |                    )
a.cc:7:21: error: expected primary-expression before ')' token
    7 | for(int i=0;i<N;i++;){
      |                     ^
Language: C++

#include <iostream>
#include <string>
int main(){
int N,X=0;
std::string S;
std::cin >> N >> S;
for(int i=0;i<N;i++;)
 if(S[i]==I)
  X++;
 else
  X=X-1;
std::cout << X << std::endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:20: error: expected ')' before ';' token
    7 | for(int i=0;i<N;i++;)
      |    ~               ^
      |                    )
a.cc:7:21: error: expected primary-expression before ')' token
    7 | for(int i=0;i<N;i++;)
      |                     ^
a.cc:10:2: error: 'else' without a previous 'if'
   10 |  else
      |  ^~~~
Language: Java


public class Main {
	public static void main(String[] args) {
		Scanner scanner = new Scanner(System.in);
		int n = scanner.nextInt();
		char[] letters = scanner.next().toCharArray();
		int ans = 0;
		int count = 0;
		
		for (int i = 0; i < n; i++) {
			if (letters[i]=='I') {
				count++;
			}else {
				count--;
			}
			if (count>ans) {
				ans = count;
			}
		}
		
		System.out.println(ans);
		scanner.close();
	}

}

Compiler output:
Main.java:4: error: cannot find symbol
		Scanner scanner = new Scanner(System.in);
		^
  symbol:   class Scanner
  location: class Main
Main.java:4: error: cannot find symbol
		Scanner scanner = new Scanner(System.in);
		                      ^
  symbol:   class Scanner
  location: class Main
2 errors
Language: C++

#include <iostream>
#include <math.h>
#include <algorithm>
#include <vector>
#include <numeric>
#include <string>
using namespace std;
const double PI = acos(-1.0);
const string alp = "abcdefghijklmnopqrstuvwxyz";
const string ALP = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
#define EXIST(s,e) ((s).find(e)!=(s).end())
#define SORT(c) sort((c).begin(),(c).end())
#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define REP(i,n) FOR(i,0,n)

int main(void) {
    int n,m,x;
    string s;
    cin >> n >> s;
    m = x = 0;
    REP(i,n){
        if(n[i]=="I"){
            x++;
            if (x > m) m = x;
        } else {
            X--;
        }
    }
    cout << m;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:22:13: error: invalid types 'int[int]' for array subscript
   22 |         if(n[i]=="I"){
      |             ^
a.cc:26:13: error: 'X' was not declared in this scope
   26 |             X--;
      |             ^
Language: C++

#include <iostream>
#include <algorithm>
using namespace std;
    int ans[101],n;
 
int main(void){
    char s[101];
    cin>>n>>s;
    for(int i=1;i<=n;i++){
        if(s[i-1]=='I')ans[i]=ans[i-1]+1;
        else ans[i]=ans[i-1]-1;
    }
    sort(ans,ans+n+1,greater<int>());
    cout<<ans[0]<<endl;
    
}

Compiler output:
a.cc:5:1: error: extended character   is not valid in an identifier
    5 |  
      | ^
a.cc:5:1: error: '\U000000a0' does not name a type
    5 |  
      | ^
Language: C++

#include <iostream>
#include <algorithm>
using namespace std;
    int ans[101],n;
 
int main(void){
    char s[101];
    cin>>n>>s;
    for(int i=1;i<=n;i++){
        if(s[i-1]=='I')ans[i]=ans[i-1]+1;
        else ans[i]=ans[i-1]-1;
    }
    for(int i=0;i<n;i++)cout<<ans[i]<<' ';
    sort(ans,ans+n+1,greater<int>());
    cout<<ans[0]<<endl;
    
}

Compiler output:
a.cc:5:1: error: extended character   is not valid in an identifier
    5 |  
      | ^
a.cc:5:1: error: '\U000000a0' does not name a type
    5 |  
      | ^
Language: C++

def main():
    n = int(input())
    s = input()

    x, maxv = 0, 0
    for c in s:
        if c == 'I':
            x += 1
        elif c == 'D':
            x -= 1
        if x > maxv:
            maxv = x
    print(maxv)


if __name__ == "__main__":
    main()

Compiler output:
a.cc:1:1: error: 'def' does not name a type
    1 | def main():
      | ^~~
Language: C

#include<stdio.h>
int main()
{
    int n,x=0,i,y,I,D;
    scanf("%d",&n);
    
    int a[n];
    for(i=0,i<n,i++)
    {
        scanf("%d",&a[i]);
        y=a[i];
        if(a[i]=I||a[i]=D)
        {
            if(a[i]=I)
                x=x+1;
            else
                x=x-1;
        }
        for(i=0,i<n-1,i++)
        {
            if(a[i]>a[i+1])
            {
            
            printf("%d",a[i]);
            }
        }
    }
    
}

Compiler output:
main.c: In function 'main':
main.c:8:20: error: expected ';' before ')' token
    8 |     for(i=0,i<n,i++)
      |                    ^
      |                    ;
main.c:8:20: error: expected expression before ')' token
main.c:12:24: error: lvalue required as left operand of assignment
   12 |         if(a[i]=I||a[i]=D)
      |                        ^
main.c:19:26: error: expected ';' before ')' token
   19 |         for(i=0,i<n-1,i++)
      |                          ^
      |                          ;
main.c:19:26: error: expected expression before ')' token
Language: C

#include<stdio.h>
int main()
{
    int n,x=0,i,y;
    scanf("%d",&n);
    
    int a[n];
    for(i=0,i<n,i++)
    {
        scanf("%d",&a[i]);
        y=a[i]
        if(a[i]=I||a[i]=D)
        {
            if(a[i]=I)
                x=x+1;
            else
                x=x-1
        }
        for(i=0,i<n-1,i++)
        {
            if(a[i]>a[i+1])
            {
            
            }
        }
    }
    
}

Compiler output:
main.c: In function 'main':
main.c:8:20: error: expected ';' before ')' token
    8 |     for(i=0,i<n,i++)
      |                    ^
      |                    ;
main.c:8:20: error: expected expression before ')' token
main.c:11:15: error: expected ';' before 'if'
   11 |         y=a[i]
      |               ^
      |               ;
   12 |         if(a[i]=I||a[i]=D)
      |         ~~
Language: C++

#include<iostream>
using namespace std;
int main()
{ int arr[100],N,x=0,s[100],max=0;
char ch;
cin>>N;
for(int i=0;i<N;i++)
{cin>>ch;
if(ch=='D'||ch=='I')
arr[i]=ch;
}
for(int j=0;j<N;j++)
{
 if(arr[i]=='I')
{x++;
}
if(arr[i]=='D')
{x--;}
if(x>=max)
{max=x;}
}
cout<<max;
return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:14:9: error: 'i' was not declared in this scope
   14 |  if(arr[i]=='I')
      |         ^
a.cc:17:8: error: 'i' was not declared in this scope
   17 | if(arr[i]=='D')
      |        ^
Language: C++

#include<iostream>
#include<stdio.h>


using namespace std;
int main()
{   int x=0; int max=0; int z=1; int N; cin>>N; char str[N];
     gets(str);
     for(int i=0;i<N;i++)
{      if(str[i]=='I')
        {       x++;
      if(x>=max)
       {      max=x;}
else {      z=1;}
      else if(str[i]=='D')

      x--;
if(x>=max)
       {      max=x;}
else {      z=1;}

      else
continue;}
}
cout<<max;
return 0;

              
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:6: error: 'gets' was not declared in this scope; did you mean 'getw'?
    8 |      gets(str);
      |      ^~~~
      |      getw
a.cc:15:7: error: expected '}' before 'else'
   15 |       else if(str[i]=='D')
      |       ^~~~
a.cc:11:9: note: to match this '{'
   11 |         {       x++;
      |         ^
a.cc:22:7: error: 'else' without a previous 'if'
   22 |       else
      |       ^~~~
a.cc: At global scope:
a.cc:25:1: error: 'cout' does not name a type
   25 | cout<<max;
      | ^~~~
a.cc:26:1: error: expected unqualified-id before 'return'
   26 | return 0;
      | ^~~~~~
a.cc:29:1: error: expected declaration before '}' token
   29 | }
      | ^
Language: C++

#include<iostream>
using namespace std;
int main()
{ int arr[100],N,x=0,s[100],max;
char ch;
cin>>N;
for(int i=0;i<N;i++)
{cin>>ch;
if(ch=='D'||ch=='I')
arr[i]=ch;
}
for(int j=0;j<N;j++)
{ if(arr[j]=='I')
{x++;
s[j]=x;}
if(arr[j]=='D')
{x--;
s[j]=x;
}
}
for(j=0;j<N;j++)
{max=s[0];
if(s[j]>s[j+1])
{max=s[j];
}
}
cout<<max;
return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:21:5: error: 'j' was not declared in this scope
   21 | for(j=0;j<N;j++)
      |     ^
Language: C++

#include<iostream>
#include<string>
using std::strlen;
int main()
{
using namespace std;
int x=0,N,i,l=0;
char a[100];
cin>>a;
N=strlen(a);
for(i=0;i<N;i++)
{
if(a[i]=='I')
{x++;
if(x>l);
l=x;
}
else if(a[i]=='D')
{x--;
if(x>l)
l=x;
}
}
cout<<l;
return 0;
}

Compiler output:
a.cc:3:12: error: 'strlen' has not been declared in 'std'
    3 | using std::strlen;
      |            ^~~~~~
a.cc: In function 'int main()':
a.cc:10:3: error: 'strlen' was not declared in this scope
   10 | N=strlen(a);
      |   ^~~~~~
a.cc:2:1: note: 'strlen' is defined in header '<cstring>'; this is probably fixable by adding '#include <cstring>'
    1 | #include<iostream>
  +++ |+#include <cstring>
    2 | #include<string>
Language: C++

#include<iostream>
using namespace std;
int main()
{ int arr[100],N,x=0,s[100];
char ch;
cin>>N;
for(int i=0;i<N;i++)
{cin>>ch;
if(ch=='D'||ch=='I')
arr[i]=ch;
}
for(int j=0;j<N;j++)
{ if(arr[i]=='I')
#include<iostream>
using namespace std;
int main()
{ int arr[100],N,x=0,s[100],max;
char ch;
cin>>N;
for(int i=0;i<N;i++)
{cin>>ch;
if(ch=='D'||ch=='I')
arr[i]=ch;
}
for(int j=0;j<N;j++)
{ if(arr[i]=='I')
{x++;
s[i]=x;}
if(arr[i]=='D')
{x--;
s[i]=x;
}
}
for(j=0;j<N;j++)
{max=s[0];
if(s[j]>s[j+1])
{max=s[j];
}
}
cout<<max;
return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:13:10: error: 'i' was not declared in this scope
   13 | { if(arr[i]=='I')
      |          ^
a.cc:16:9: warning: empty parentheses were disambiguated as a function declaration [-Wvexing-parse]
   16 | int main()
      |         ^~
a.cc:16:9: note: remove parentheses to default-initialize a variable
   16 | int main()
      |         ^~
      |         --
a.cc:16:9: note: or replace parentheses with braces to value-initialize a variable
a.cc:17:1: error: a function-definition is not allowed here before '{' token
   17 | { int arr[100],N,x=0,s[100],max;
      | ^
a.cc:42:2: error: expected '}' at end of input
   42 | }
      |  ^
a.cc:13:1: note: to match this '{'
   13 | { if(arr[i]=='I')
      | ^
a.cc:42:2: error: expected '}' at end of input
   42 | }
      |  ^
a.cc:4:1: note: to match this '{'
    4 | { int arr[100],N,x=0,s[100];
      | ^
Language: C++

#include<iostream>
#include<string>
int main()
{
using namespace std;
using string::strlen;
int x=0,N,i,l=0;
char a[100];
cin>>a;
N=strlen(a);
for(i=0;i<N;i++)
{
if(a[i]=='I')
{x++;
if(x>l);
l=x;
}
else if(a[i]=='D')
{x--;
if(x>l)
l=x;
}
}
cout<<l;
return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:15: error: using-declaration for member at non-class scope
    6 | using string::strlen;
      |               ^~~~~~
a.cc:10:3: error: 'strlen' was not declared in this scope
   10 | N=strlen(a);
      |   ^~~~~~
a.cc:2:1: note: 'strlen' is defined in header '<cstring>'; this is probably fixable by adding '#include <cstring>'
    1 | #include<iostream>
  +++ |+#include <cstring>
    2 | #include<string>
Language: C++

#include<iostream>
#include<string>
using namespace std;
int main()
{
int x=0,N,i,l=0;
char a[100];
cin>>a;
N=strlen(a);
for(i=0;i<N;i++)
{
if(a[i]=='I')
{x++;
if(x>l);
l=x;
}
else if(a[i]=='D')
{x--;
if(x>l)
l=x;
}
}
cout<<l;
return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:3: error: 'strlen' was not declared in this scope
    9 | N=strlen(a);
      |   ^~~~~~
a.cc:2:1: note: 'strlen' is defined in header '<cstring>'; this is probably fixable by adding '#include <cstring>'
    1 | #include<iostream>
  +++ |+#include <cstring>
    2 | #include<string>
Language: C++

#include<iostream>
#include<string>
int main()
{
using namespace std;
int x=0,N,i,l=0;
char a[100];
cin>>a;
N=strlen(a);
for(i=0;i<N;i++)
{
if(a[i]=='I')
{x++;
if(x>l);
l=x;
}
else if(a[i]=='D')
{x--;
if(x>l)
l=x;
}
}
cout<<l;
return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:3: error: 'strlen' was not declared in this scope
    9 | N=strlen(a);
      |   ^~~~~~
a.cc:2:1: note: 'strlen' is defined in header '<cstring>'; this is probably fixable by adding '#include <cstring>'
    1 | #include<iostream>
  +++ |+#include <cstring>
    2 | #include<string>
Language: C++

#include<iostream>
#include<string>
int main()
{
using namespace std;
int x=0,N,i,l=0;
char a[100];
cin>>a;
N=strlen(a);
for(I=0;I<N;I++)
{
if(a[I]=='I')
{x++;
if(x>l);
l=x;
}
else if(a[I]=='D')
{x--;
if(x>l)
l=x;
}
}
cout<<l;
return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:3: error: 'strlen' was not declared in this scope
    9 | N=strlen(a);
      |   ^~~~~~
a.cc:2:1: note: 'strlen' is defined in header '<cstring>'; this is probably fixable by adding '#include <cstring>'
    1 | #include<iostream>
  +++ |+#include <cstring>
    2 | #include<string>
a.cc:10:5: error: 'I' was not declared in this scope
   10 | for(I=0;I<N;I++)
      |     ^
Language: C++

#include<iostream>
#include<stdio.h>
#include<stdlib.h>


using namespace std;

int main()
{
char S[1000];int x=0,N;
cin>>N;
cout<<endl;
for(int j=0;j<N;j++)
{cin>>S[j];}
y=x;
for(int i=0;i<N;i++)
{
if(S[i]=='I')
{x+=1;}
else if(S[i]=='D')
{x-=1;}
if(x>y)
{y=x;}

}
cout<<y;
return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:15:1: error: 'y' was not declared in this scope
   15 | y=x;
      | ^
Language: C++

#include<iostream>
#include<stdio.h>
#include<stdlib.h>


using namespace std;

int main()
{
char S[];int x=0,N;
cin>>N;
cout<<endl;
for(int j=0;j<N;j++)
{cin>>S[j];}
y=x;
for(int i=0;i<N;i++)
{
if(S[i]=='I')
{x+=1;}
else if(S[i]=='D')
{x-=1;}
if(x>y)
{y=x;}

}
cout<<y;
return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:10:6: error: storage size of 'S' isn't known
   10 | char S[];int x=0,N;
      |      ^
a.cc:15:1: error: 'y' was not declared in this scope
   15 | y=x;
      | ^
Language: Java

import java.io.*;
import java.util.*;
import java.lang.*;

public class Main{
    public static void main(String[] args) {
        
        Scanner sc=new Scanner(System.in);
         int a=sc.nextInt();
        String b=sc.next();
        
        int x=0;
        
        char c[]=b.toCharArray();
        int f[];
        for(int d=0;d<a;d++) 
         {
             char r=b.charAt(d);
             if(r=='I')
             x++;
             else 
             x--;
             
             f[d]=x;
             
         }
         Arrays.sort(f);
         int h=f[(b.length()-1)];



}}

Compiler output:
Main.java:24: error: variable f might not have been initialized
             f[d]=x;
             ^
Main.java:27: error: variable f might not have been initialized
         Arrays.sort(f);
                     ^
2 errors
Language: C++

#include<iostream>
#include<stdio.h>

using namespace std;

int max(int *arr, int n)
{
    int max=arr[0];
    for (int i=1;i<n;i++)
    {
        if (arr[i]>max)
            max=arr[i];
    }
    return max;
}

int main()
{
    char S[100];
    int N, a[101];
    a[0]=0;
    cin>>N;
    gets(S);
    for (int i=0; i<N; i++)
    {
        if (S[i]=='I')
            a[i+1]=a[i]+1;
        else if (S[i]=='D')
            a[i+1]=a[i]-1;
    }
    int R=max(a,N+1);
    cout<<R;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:23:5: error: 'gets' was not declared in this scope; did you mean 'getw'?
   23 |     gets(S);
      |     ^~~~
      |     getw
Language: C++

#include<iostream>
#include<stdio.h>

using namespace std;
int main()
{    int x=0; char str[10]; int max=1; int z=1;
     gets(str);
     for(int i=0;i<10;i++)
{      if(str[i]==I)
        {       x++;
      if(x>=max)
       {      max=x;}
else {      z=1;} }
      else if(str[i]==D)

     {
	  x--;
if(x>=max)
       {      max=x;}
else {      z=1;}
}
      else
z=1;}
}
cout<<max;
return 0;

              
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:6: error: 'gets' was not declared in this scope; did you mean 'getw'?
    7 |      gets(str);
      |      ^~~~
      |      getw
a.cc:9:19: error: 'I' was not declared in this scope
    9 | {      if(str[i]==I)
      |                   ^
a.cc:14:23: error: 'D' was not declared in this scope
   14 |       else if(str[i]==D)
      |                       ^
a.cc: At global scope:
a.cc:25:1: error: 'cout' does not name a type
   25 | cout<<max;
      | ^~~~
a.cc:26:1: error: expected unqualified-id before 'return'
   26 | return 0;
      | ^~~~~~
a.cc:29:1: error: expected declaration before '}' token
   29 | }
      | ^
Language: C++

#include<iostream>
#include<stdio.h>
#include<conio.h>
using namespace std;
int main()
{    int x=0; char str[10]; int max=1; int z=1;
     gets(str);
     for(int i=0;i<10;i++)
{      if(str[i]==I)
        {       x++;
      if(x>=max)
       {      max=x;}
else {      z=1;} }
      else if(str[i]==D)

     {
	  x--;
if(x>=max)
       {      max=x;}
else {      z=1;}
}
      else
z=1;}
}
cout<<max;
return 0;

              
}

Compiler output:
a.cc:3:9: fatal error: conio.h: No such file or directory
    3 | #include<conio.h>
      |         ^~~~~~~~~
compilation terminated.
Language: C++

#include<iostream>
#include<conio.h>
#include<stdio.h>

using namespace std;

int max(int *arr, int n)
{
    int max=arr[0];
    for (int i=1;i<n;i++)
    {
        if (arr[i]>max)
            max=arr[i];
    }
    return max;
}

int main()
{
    char S[100];
    int N, a[101];
    a[0]=0;
    cin>>N;
    gets(S);
    for (int i=0; i<N; i++)
    {
        if (S[i]=='I')
            a[i+1]=a[i]+1;
        else if (S[i]=='D')
            a[i+1]=a[i]-1;
    }
    int R=max(a,N+1);
    cout<<R;
    return 0;
}

Compiler output:
a.cc:2:9: fatal error: conio.h: No such file or directory
    2 | #include<conio.h>
      |         ^~~~~~~~~
compilation terminated.
Language: C++

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

int main() {
	int N, i, max = 0;
    cin >> N >> S;
	string S;
	char I;
	int x[N+1];
	x[0]=0;
	for (i = 0; i < N+1; i++) {
		if (S[i] = 'I') {
			x[i + 1] = x[i] + 1;
		}
		else {
			x[i + 1] = x[i] - 1;
		}
        if (x[i] > max) { max = x[i]; }
	}
	cout << max << endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:17: error: 'S' was not declared in this scope
    8 |     cin >> N >> S;
      |                 ^
Language: Java

import java.util.*;

public class IncrementDecrement {
	public static void main(String[] args) {
		Scanner sc1 = new Scanner(System.in);
		int n = sc1.nextInt();
		String s = sc1.next();
		String[] sArray = s.split("");
		int ans = 0;
		int x = 0;
		for (int i = 0; i < n; i++) {
			if (sArray[i].equals("I")) {
				x = x + 1;
			} else {
				x = x - 1;
			}
			if (ans < x) {
				ans = x;
			}
		}
		System.out.println(ans);
	}
}


Compiler output:
Main.java:3: error: class IncrementDecrement is public, should be declared in a file named IncrementDecrement.java
public class IncrementDecrement {
       ^
1 error
Language: C++

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

int main(void) {
  int N;
  String S;
	cin >> N;
	cin >> S;
  int ans = 0;
  int cur = 0;
  REP(i,N) {
    if (S[i] == "I") cur++;
    else cur--;
    ans = max(ans, cur);
  }

  cout << ans << '\n';
}



Compiler output:
a.cc: In function 'int main()':
a.cc:7:3: error: 'String' was not declared in this scope
    7 |   String S;
      |   ^~~~~~
a.cc:9:16: error: 'S' was not declared in this scope
    9 |         cin >> S;
      |                ^
Language: Java

import java.io.IOException;
import java.io.InputStreamReader;

public class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader input = new BufferedReader(new InputStreamReader(System.in));
        int N = Integer.parseInt(input.readLine());
        String S = input.readLine();
        int[] values = new int[N + 1];
        int currentValue = 0;
        values[0] = currentValue;
        for (int i = 0; i < N; i++) {
            currentValue += incrementOrDecrement(S.charAt(i));
            values[i + 1] = currentValue;

        }

        int answer = values[0];
        for (int i = 0; i < N + 1; i++) {
            if (answer < values[i]) {
                answer = values[i];
            }
        }
        System.out.println(answer);
    }

    private static int incrementOrDecrement(char operation) {
        if (operation == 'I') {
            return 1;
        } else {
            return -1;
        }
    }
}

Compiler output:
Main.java:6: error: cannot find symbol
        BufferedReader input = new BufferedReader(new InputStreamReader(System.in));
        ^
  symbol:   class BufferedReader
  location: class Main
Main.java:6: error: cannot find symbol
        BufferedReader input = new BufferedReader(new InputStreamReader(System.in));
                                   ^
  symbol:   class BufferedReader
  location: class Main
2 errors
Language: C++

#include<bits/stdc++.h>

int N;
char str[101];
int main()
{
    scanf("%d", &N);
    scanf("%s", &str);
    int x = 0, ans = 0;
    for(int i=0;i<N;i++)
    {
        if(str[i]=='I') x++;
        else x--;
        ans = max(ans, x);
    }
    printf("%d\n", ans);
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:15: error: 'max' was not declared in this scope; did you mean 'std::max'?
   14 |         ans = max(ans, x);
      |               ^~~
      |               std::max
In file included from /usr/include/c++/14/algorithm:61,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algo.h:5716:5: note: 'std::max' declared here
 5716 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
Language: Java


import java.util.*;

public Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		
		int x=0;
		Scanner s=new Scanner(System.in);
		int N=s.nextInt();
		String S=s.next();
		int i=0;
		int y[]=new int[S.length()];
		int max=0;
		
		for(i=0;i<S.length();i++){
			if(S.charAt(i)=='I'){
				x++;
				y[i]=x;
			}else{
				x--;
				y[i]=x;
			}
		}
		
		max=y[0];
		
		for(i=0;i<S.length();i++){
			if(max<y[i]){
				max=y[i];
			}
		}
		if(max<0){
			max=0;
		}
		System.out.println(max);

	}

}

Compiler output:
Main.java:4: error: class, interface, enum, or record expected
public Main {
       ^
Main.java:6: error: unnamed classes are a preview feature and are disabled by default.
	public static void main(String[] args) {
	              ^
  (use --enable-preview to enable unnamed classes)
Main.java:41: error: class, interface, enum, or record expected
}
^
3 errors
Language: C++

#include <cstdio> 
int main （）{
int N 、k = 0 、x = 0 ;
char S [ 100 ];
scanf （"％d" 、＆N ）;
scanf （"％s" 、S ）;
for （int i = 0 ; i < N ; i ++）{
if （S [ i ] == 'I' ）{
x + = 1 ;
if （k <= x ）{
k = x ;
}}
} else {
x -  = 1 ;
}}
}}
printf （"％d" 、k ）;
0を返します。 
}}

Compiler output:
a.cc:3:7: error: extended character 、 is not valid in an identifier
    3 | int N 、k = 0 、x = 0 ;
      |       ^
a.cc:3:15: error: extended character 、 is not valid in an identifier
    3 | int N 、k = 0 、x = 0 ;
      |               ^
a.cc:5:15: error: extended character 、 is not valid in an identifier
    5 | scanf （"％d" 、＆N ）;
      |               ^
a.cc:6:15: error: extended character 、 is not valid in an identifier
    6 | scanf （"％s" 、S ）;
      |               ^
a.cc:17:16: error: extended character 、 is not valid in an identifier
   17 | printf （"％d" 、k ）;
      |                ^
a.cc:18:1: error: extended character 。 is not valid in an identifier
   18 | 0を返します。
      | ^
a.cc:2:10: error: expected initializer before '\U0000ff08\U0000ff09'
    2 | int main （）{
      |          ^~~~
a.cc:16:1: error: expected declaration before '}' token
   16 | }}
      | ^
a.cc:16:2: error: expected declaration before '}' token
   16 | }}
      |  ^
a.cc:17:1: error: 'printf' does not name a type
   17 | printf （"％d" 、k ）;
      | ^~~~~~
a.cc:2:1: note: 'printf' is defined in header '<cstdio>'; this is probably fixable by adding '#include <cstdio>'
    1 | #include <cstdio>
  +++ |+#include <cstdio>
    2 | int main （）{
a.cc:18:1: error: expected unqualified-id before numeric constant
   18 | 0を返します。
      | ^~~~~~~~~~~~~
a.cc:19:1: error: expected declaration before '}' token
   19 | }}
      | ^
a.cc:19:2: error: expected declaration before '}' token
   19 | }}
      |  ^
Language: C++

#include <stdio.h>

int main(){

int N;
int sum = 0;
scanf("%d", &N);
char s[N];
scanf("%s", s);
for(int i=0; i<N; i++){
   if(s[i]=="I") sum++;
   else sum--;
}
printf("%d", sum);
return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:11: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   11 |    if(s[i]=="I") sum++;
      |       ~~~~^~~~~
Language: C++

#include <stdio.h>

int main(){

int N;
int sum = 0;
scanf("%d", &N);
char s[N];
scanf("%s", &s);
for(int i=0; i<N; i++){
   if(s[i]=="I") sum++;
   else sum--;
}
printf("%d", sum);
return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:11: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   11 |    if(s[i]=="I") sum++;
      |       ~~~~^~~~~
Language: C++

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

int main() {
	int X = 0, max_v = 0;
	string S;
	cin >> N >> S;
	for (int i = 0; i < N; i++) {
		X = S[i] == 'I'? X + 1 : X - 1;
		max_v = X > max_v ? X : max_v;
	}
	cout << max_v;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:16: error: 'N' was not declared in this scope
    8 |         cin >> N >> S;
      |                ^
Language: C++

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

int main(){
  int N, score=0, max=0;  
  string str;
  cin >> N;
  cin >> str;

  for(int i=0; i<N; i++){
    if(str[i] == 'I'){
      score++;
      max = max(max, score);
    }
    else score--;
  }

  cout << max << endl;
  
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:14:16: error: 'max' cannot be used as a function
   14 |       max = max(max, score);
      |             ~~~^~~~~~~~~~~~
Language: C++

#include <iostream>
#include <vector>

using namespace std;


int main()
{
  int N;
  string S;

  cin >> N >> S;

  vector<int> vec;
  vec.push_back(0);

  for(int i = 0; i < N; i++) {
    vec.push_back((S[i] == 'I') ? vec[i] + 1 : vec[i] - 1);
  }
  cout << *std::max_element(vec.begin(), vec.end()) << endl;

  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:20:17: error: 'max_element' is not a member of 'std'; did you mean 'tuple_element'?
   20 |   cout << *std::max_element(vec.begin(), vec.end()) << endl;
      |                 ^~~~~~~~~~~
      |                 tuple_element
Language: C++

#include <iostream>
#include <vector>

using namespace std;


int main()
{
  int N;
  string S;

  cin >> N >> S;

  vector<int> vec;
  vec.push_back(0);

  for(int i = 0; i < N; i++) {
    if(S[i] == 'I') {
      vec.push_back(vec[i] + 1);
    } else {
      vec.push_back(vec[i] - 1);
    }
  }
  cout << *max_element(vec.begin(), vec.end()) << endl;

  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:24:12: error: 'max_element' was not declared in this scope
   24 |   cout << *max_element(vec.begin(), vec.end()) << endl;
      |            ^~~~~~~~~~~
Language: C++

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


int main(){
  int N;
  string S;

  cin >> N;
  cin >> S;

  int x = 0;
  int X[N];

  for(int i=0; i<N; i++){
    if(S[i] == 'I'){
      x += 1;
    }
    else if(S[i] == 'D'){
      x -= 1;
    }

    X[i] = x;
  }

  int max_x = 0;
  for(int i=0; i<N; i++){
    if(max_x < X[i]){
      max_x = X[i];
    }
  }

  cout << max_x << endl;

Compiler output:
a.cc: In function 'int main()':
a.cc:34:25: error: expected '}' at end of input
   34 |   cout << max_x << endl;
      |                         ^
a.cc:6:11: note: to match this '{'
    6 | int main(){
      |           ^
Language: C++

package main

import (
	"fmt"
)

func main() {
	var n, x, m int
	var s string
	fmt.Scan(&n, &s)
	for _, c := range s {
		// fmt.Println(c)
		if c == 'I' {
			x++
			if x > m {
				m = x
			}
		} else {
			x--
		}
	}
	fmt.Println(m)
}


Compiler output:
a.cc:1:1: error: 'package' does not name a type
    1 | package main
      | ^~~~~~~
Language: C

//F
#include<stdio.h>
#include<conio.h>
main() {
	int i, n;
	scanf("%d",&n);
	int max=0, x=0;
	char S[n], ch;
	scanf("%c",&ch);
	for(i=0; i<n; i++){
		scanf("%c",&S[i]);
	}
	S[n]='\0';
	for(i=0; i<n; i++) {
		if(S[i]=='I') {
			x++;

		}
		else {
			x--;
		}
		if(x>max) {
			max=x;
		}
	}
	printf("%d", max);
	return 0;
}

Compiler output:
main.c:3:9: fatal error: conio.h: No such file or directory
    3 | #include<conio.h>
      |         ^~~~~~~~~
compilation terminated.
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define FOR(i,k,n) for(int i = (int)(k); i < (int)(n); i++)
#define REP(i,n) FOR(i,0,n)
#define ALL(a) a.begin(), a.end()
#define MS(m,v) memset(m,v,sizeof(m))
typedef long long ll;
typedef long double ld;
typedef vector<int> vi;
typedef vector<string> vs;
typedef pair<int, int> pii;
const int MOD = 1000000007;
const int INF = MOD + 1;
const ld EPS = 1e-12;
template<class T> T &chmin(T &a, const T &b) { return a = min(a, b); }
template<class T> T &chmax(T &a, const T &b) { return a = max(a, b); }

/*--------------------template--------------------*/

int main()
{
	cin.sync_with_stdio(false); cout << fixed << setprecision(10);
	int n; string s;
	cin >> n >> s;
	int ans = 0, x = 0;
	for (auto i : s)
	{
		if (i == "I") x++;
		else x--;
		chmax(ans, x);
	}
	cout << ans << endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:28:23: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   28 |                 if (i == "I") x++;
      |                     ~~^~~~~~
Language: C++

#include<iostream>
using namespace std;
int mainI(){
int N,cnt=0,max=0,i;
cin>>N;
char S[N+1];
for(i=0;i<N;i++){
cin>>S[i];
if(S[i]=='I')cnt++;else cnt--;
if(max<cnt) max=cnt;
}
cout<<max<<endl;
return 0;
}

Compiler output:
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/14/../../../x86_64-linux-gnu/Scrt1.o: in function `_start':
(.text+0x17): undefined reference to `main'
collect2: error: ld returned 1 exit status
Language: C++

#include<stdio.h>
using namespace std;
 
int main(){
	int x,Max;x=Max=0;
	int n;string s;cin>>n>>s;
	for(char c:s){
		if(c=='I')x++;
		else x--;
		Max=max(Max,x);
	}
	cout<<Max<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:15: error: 'string' was not declared in this scope
    6 |         int n;string s;cin>>n>>s;
      |               ^~~~~~
a.cc:2:1: note: 'std::string' is defined in header '<string>'; this is probably fixable by adding '#include <string>'
    1 | #include<stdio.h>
  +++ |+#include <string>
    2 | using namespace std;
a.cc:6:24: error: 'cin' was not declared in this scope
    6 |         int n;string s;cin>>n>>s;
      |                        ^~~
a.cc:2:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
    1 | #include<stdio.h>
  +++ |+#include <iostream>
    2 | using namespace std;
a.cc:6:32: error: 's' was not declared in this scope
    6 |         int n;string s;cin>>n>>s;
      |                                ^
a.cc:10:21: error: 'max' was not declared in this scope; did you mean 'Max'?
   10 |                 Max=max(Max,x);
      |                     ^~~
      |                     Max
a.cc:12:9: error: 'cout' was not declared in this scope
   12 |         cout<<Max<<endl;
      |         ^~~~
a.cc:12:9: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:12:20: error: 'endl' was not declared in this scope
   12 |         cout<<Max<<endl;
      |                    ^~~~
a.cc:2:1: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
    1 | #include<stdio.h>
  +++ |+#include <ostream>
    2 | using namespace std;
Language: C++

#include<cmath>
using namespace std;
int main()
{
    long long m,n,i,a;
    string s;
    while(cin>>n)
    {
        cin>>s;
        a=0;m=0;
        for(i=0;i<n;i++)
        {
            if(s[i]=='I')
                a++;
            else a--;
            m=max(a,m);

        }
        cout<<m<<endl;
    }
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:5: error: 'string' was not declared in this scope
    6 |     string s;
      |     ^~~~~~
a.cc:2:1: note: 'std::string' is defined in header '<string>'; this is probably fixable by adding '#include <string>'
    1 | #include<cmath>
  +++ |+#include <string>
    2 | using namespace std;
a.cc:7:11: error: 'cin' was not declared in this scope
    7 |     while(cin>>n)
      |           ^~~
a.cc:2:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
    1 | #include<cmath>
  +++ |+#include <iostream>
    2 | using namespace std;
a.cc:9:14: error: 's' was not declared in this scope
    9 |         cin>>s;
      |              ^
a.cc:19:9: error: 'cout' was not declared in this scope
   19 |         cout<<m<<endl;
      |         ^~~~
a.cc:19:9: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:19:18: error: 'endl' was not declared in this scope
   19 |         cout<<m<<endl;
      |                  ^~~~
a.cc:2:1: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
    1 | #include<cmath>
  +++ |+#include <ostream>
    2 | using namespace std;
Language: C++

#include <iostream>
#include <string>

using namespace std;

int main(){
  int N, max = 0, count = 0;
  string S;
  cin >> N;
  cin >> S;

  for (int i = 0; i < N; ++i)
  {
    if(S[i] == 'I'){
      count++;
      if(count > max)
        max = count;
    }
    else if(S[i] == 'D')
      count--;
  }
  cout << max;

  retu

Compiler output:
a.cc: In function 'int main()':
a.cc:24:3: error: 'retu' was not declared in this scope
   24 |   retu
      |   ^~~~
a.cc:24:7: error: expected '}' at end of input
   24 |   retu
      |       ^
a.cc:6:11: note: to match this '{'
    6 | int main(){
      |           ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
	int n;
	string s;
	int ans=0;
	cin>>n>>s;
	for(auto i:s){
		if(i=='I')
			++ans;
		else
			--ans;
	}
	

Compiler output:
a.cc: In function 'int main()':
a.cc:13:10: error: expected '}' at end of input
   13 |         }
      |          ^
a.cc:3:11: note: to match this '{'
    3 | int main(){
      |           ^
Language: Java

import java.util.Scanner;
 
public class Main {
 public static void main (String[ ] args) {
  Scanner sc = new Scanner(System.in);
  int n = sc.nextInt();
  String s = sc.next();
  char[] ch = s.toCharArray();
  int x = 0;
 
  int m = 0;
  for (int i = 0; i < n; i++) {
   if (ch[i] == 'I') {
    x++;
    m = Math.max(m. x);
   } else if (ch[i] == 'D') {
    x--;
   }
 }
 
 
  System.out.println(m);
 
 }
}

Compiler output:
Main.java:15: error: int cannot be dereferenced
    m = Math.max(m. x);
                  ^
1 error
Language: C++

#include <iostream>
#include <string>

using namespace std;

int main()
{
    string str;
    cin >> str;

    int32_t output{ 0 }, x{ 0 };
    for(auto itr = str.cbegin(), itr != str.cend(); ++itr) {
        if(*itr == 'I') {
            ++x;
        }
        else {
            --x;
        }
        if(x > output) {
            output = x;
        }
    }

    cout << output << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:37: error: expected ';' before '!=' token
   12 |     for(auto itr = str.cbegin(), itr != str.cend(); ++itr) {
      |                                     ^~~
      |                                     ;
a.cc:12:38: error: expected primary-expression before '!=' token
   12 |     for(auto itr = str.cbegin(), itr != str.cend(); ++itr) {
      |                                      ^~
Language: C

#include <stdio.h>
#include <stdlib.h>
int main(){
    int N;
    scanf("%d",&N);
    char s = calloc(N+1,sizeof(char));
    scanf("%s",s);
    int i,x=0;
    int max = 0;
    for(i = 0; i < N; i++){
        if(s[i]=='I'){
            x++;
        }else if(s[i]=='D'){
            x--;
        }
        if(x > max){
            max = x;
        }
    }
    printf("%d",max);
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:6:14: error: initialization of 'char' from 'void *' makes integer from pointer without a cast [-Wint-conversion]
    6 |     char s = calloc(N+1,sizeof(char));
      |              ^~~~~~
main.c:11:13: error: subscripted value is neither array nor pointer nor vector
   11 |         if(s[i]=='I'){
      |             ^
main.c:13:19: error: subscripted value is neither array nor pointer nor vector
   13 |         }else if(s[i]=='D'){
      |                   ^
Language: C

#include <stdio.h>
int main(){
int n;
char s[1000];
int s[100];
int i;
int x=1;
int o=0;
scanf("%d%s",&n,s);
for(i=0;i<n;i++){
	if(s[i]=='I'){
		++x;s[o]=x;
		o++;
	}else if(s[i]=='D'){
		--x;
		s[o]=x;
		o++;
	}
	
}
printf("%d",x);
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:5:5: error: conflicting types for 's'; have 'int[100]'
    5 | int s[100];
      |     ^
main.c:4:6: note: previous declaration of 's' with type 'char[1000]'
    4 | char s[1000];
      |      ^
Language: C++

#include "iostream"
#include <string>

using namespace std;
int main(){
	string s;
	int a;
	int b = 0;
	int c = 0;
	cin >> a;
	cin >> s;
	for (int i = 0; i < s.size(); i++){
		if(s[i] == "I"){
			b = b + 1;
		}
		if(s[i] == "D"){
			b = b - 1;
		}
		if(b > c){
			c = b;
		}
	}
	
	cout << c << endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:25: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   13 |                 if(s[i] == "I"){
a.cc:16:25: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   16 |                 if(s[i] == "D"){
Language: C++

#include "iostream"
#include <string>

using namespace std;
int main(){
	char s;
	int a;
	int b = 0;
	int c = 0;
	cin >> a;
	cin >> s;
	for (int i = 0; i < s.size(); i++){
		if(s[i] == "I"){
			b = b + 1;
		}
		if(s[i] == "D"){
			b = b - 1;
		}
		if(b > c){
			c = b;
		}
	}
	
	cout << c << endl;
	return 0;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:12:31: error: request for member 'size' in 's', which is of non-class type 'char'
   12 |         for (int i = 0; i < s.size(); i++){
      |                               ^~~~
a.cc:13:21: error: invalid types 'char[int]' for array subscript
   13 |                 if(s[i] == "I"){
      |                     ^
a.cc:16:21: error: invalid types 'char[int]' for array subscript
   16 |                 if(s[i] == "D"){
      |                     ^
Language: C++

#include "iostream"
#include <string>

using namespace std;
int main(){
	char s;
	int a;
	int b = 0;
	int c = 0;
	cin >> a;
	cin >> s;
	for (int i = 0; i < s.size(); i++){
		if(s[i] = "I"){
			b = b + 1;
		}
		if(s[i] = "D"){
			b = b - 1;
		}
		if(b > c){
			c = b;
		}
	}
	
	cout << c << endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:31: error: request for member 'size' in 's', which is of non-class type 'char'
   12 |         for (int i = 0; i < s.size(); i++){
      |                               ^~~~
a.cc:13:21: error: invalid types 'char[int]' for array subscript
   13 |                 if(s[i] = "I"){
      |                     ^
a.cc:16:21: error: invalid types 'char[int]' for array subscript
   16 |                 if(s[i] = "D"){
      |                     ^