Submission #1334898

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Source Code Expand

#include <stdio.h>
int main(void){
    int n,p,ans=0,che=0;
    char s[110];
    scanf("%d",&n);
    scanf("%s",s);
    p=(n-1)/2;
    if(n%2==0)che++;
    else if(s[(n-1)/2]!='b')che++;
    else {
        for(int i=0;i<(n-1)/2;i++){
            if((p-i)%3==1&&s[i]=='a'&&s[n-1-i]=='c')ans++;
            else if((p-i)%3==2&&s[i]=='c'&&s[n-1-i]=='a')ans++;
            else if((p-i)%3==0&&s[i]=='b'&&s[n-1-i]=='b')ans++;
            else che++;
        }
    }
    if(che!=0)printf("-1\n");
    else printf("%d\n",ans);
    return 0;
}

Submission Info

Compile Error

./Main.c: In function ‘main’:
./Main.c:5:5: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&n);
     ^
./Main.c:6:5: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%s",s);
     ^

Judge Result