Submission #1338802

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Source Code Expand

#include <stdio.h>
int main(void){
    int n,a[110000],ans=0;
    scanf("%d",&n);
    for(int i=0;i<n;i++){
        scanf("%d",&a[i]);
    }
    for(int i=0;i<n;i++){
        if(a[a[i]-1]==i+1)ans++;
    }
    printf("%d\n",ans/2);
    return 0;
}

Submission Info

Compile Error

./Main.c: In function ‘main’:
./Main.c:4:5: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&n);
     ^
./Main.c:6:9: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d",&a[i]);
         ^

Judge Result