Submission #2702772

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Source Code Expand

#include<bits/stdc++.h>
using namespace std;

long long int N, a[111], b[111];
long double f;

int main(){
    scanf("%lld", &N);
    for(int i = 0; i < N; ++i)
        scanf("%lld", a + i);
    for(int i = 0; i < N; ++i)
        for(int j = 0; j < N; ++j)
            if(!(a[i] % a[j]))++b[i];
    for(int i = 0; i < N; ++i)
        f += ((b[i] + 1) / 2) / static_cast<long double>(b[i]);
    printf("%.12Lf\n", f);
    return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:8:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%lld", &N);
                      ^
./Main.cpp:10:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
         scanf("%lld", a + i);
                             ^

Judge Result