Submission #1151411

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Source Code Expand

#include <stdio.h>


int main(void){
  
  int N;
  
  scanf("%d", &N);
  
  char S[N+1];
  
  int ans = -1;
  
  scanf("%s", S);
  
  int a = 0;
  int i;
  
  //printf("%d %s", N, S );
  
  
  if( N % 2 ){
    a = 1;
    if( (N/2) % 3 == 0 ){
      for( i = 0; i < N; i++ ){
        if( i % 3 == 0 ){
          if( S[i] != 'b' ){
            a = 0;
            break;
          }
        }
        else if( i % 3 == 1 ){ 
          if( S[i] != 'c' ){
            a = 0;
            break;
          }
        }
        else{
          if( S[i] != 'a' ){
            a = 0;
            break;
          }
        }
      }
      
      
    }
    else if( (N/2) % 3 == 1 ){
      for( i = 0; i < N; i++ ){
        if( i % 3 == 0 ){
          if( S[i] != 'a' ){
            a = 0;
            break;
          }
        }
        else if( i % 3 == 1 ){ 
          if( S[i] != 'b' ){
            a = 0;
            break;
          }
        }
        else{
          if( S[i] != 'c' ){
            a = 0;
            break;
          }
        }
      }
    }
    else{
      for( i = 0; i < N; i++ ){
        if( i % 3 == 0 ){
          if( S[i] != 'c' ){
            a = 0;
            break;
          }
        }
        else if( i % 3 == 1 ){ 
          if( S[i] != 'a' ){
            a = 0;
            break;
          }
        }
        else{
          if( S[i] != 'b' ){
            a = 0;
            break;
          }
        }
      }
      
    }
    
    if( a ) ans = N/2;
    
  }  
  
  printf("%d\n", ans );
  
  return 0;
  
}

Submission Info

Compile Error

./Main.c: In function ‘main’:
./Main.c:8:3: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &N);
   ^
./Main.c:14:3: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%s", S);
   ^

Judge Result