Submission #704665

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Source Code Expand

#include <iostream>
#include <algorithm>
#include <cstdio>
#include <cstdlib>
using namespace std;
int main (void){
    int N;
    char C[100];
    int a=0;
    int un=0;
    int ans;
    scanf("%d",&N);
    for (int i = 0; i < N; ++i)
    {
      scanf("%s",C);
      if(C[0]=='A'){
        un++;
      }else{
        un--;
        if(un<0){
          printf("NO\n");
          return 0;
        }
      }
    }
    if(un==0) printf("YES\n");
    else printf("NO\n");
    return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:12:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&N);
                   ^
./Main.cpp:15:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
       scanf("%s",C);
                    ^

Judge Result