Submission #3050281

---

Source Code Expand

https:/#include<iostream>
using ll = long long;
using namespace std;
int main(){
    string str;
    cin>>str;
    int cnt=0,ans=1;
    for(int i=0;i<str.size();i++){
        if(str[i]=='2') cnt++;
        else cnt--;
        ans = max(ans,cnt);
        if(cnt<0){
            cout << "-1\n";
            return 0;
        }
    }
    if(cnt!=0){
        cout << "-1\n";
        return 0;
    }
    cout << ans << endl;
    return 0;
}

Submission Info

Compile Error

./Main.cpp:1:8: error: stray ‘#’ in program
 https:/#include<iostream>
        ^
./Main.cpp:1:1: error: ‘https’ does not name a type
 https:/#include<iostream>
 ^
./Main.cpp: In function ‘int main()’:
./Main.cpp:5:5: error: ‘string’ was not declared in this scope
     string str;
     ^
./Main.cpp:6:5: error: ‘cin’ was not declared in this scope
     cin>>str;
     ^
./Main.cpp:6:10: error: ‘str’ was not declared in this scope
     cin>>str;
          ^
./Main.cpp:11:26: error: ‘max’ was not declared in this scope
         ans = max(ans,cnt);
                          ^
./Main.cpp:13:13: error: ‘cout’ was not declared in this scope
             cout << "-1\n";
             ^
./Main.cpp:18:9: error: ‘cout’ was not declared in this scope
         cout << "-1\n";
         ^
./Main.cpp:21:5: error: ‘cout’ was not declared in this scope
     cout << ans << endl;
     ^
./Main.cpp:21:20: error: ‘endl’ was not declared in this scope
     cout << ans << endl;
                    ^