Submission #1590592

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Source Code Expand

#include    <iostream>
using namespace std;

int main(void){
    // Here your code !
    int n,ans=0;
    scanf("%d",&n);
    
    int a[4];
    for(int i=0;i<n; i++){
        scanf("%d",&a[i]);
        a[i]--;
    }
    for(int i=0;i<n;i++){
        if(a[i]>i){
            if(a[a[i]]==i){
                ans++;
            }
        }
    }
    printf("%d\n",ans);
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:7:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&n);
                   ^
./Main.cpp:11:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d",&a[i]);
                          ^

Judge Result