Submission #3819163

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Source Code Expand

#include<iostream>
using namespace std;
int main() {
    int n, k;
    cin >> n >> k;
    int a[20];
    for (int i = 0; i < n; ++i) {
        cin >> a[i];
    }
    int b[20] = {0};
    int cnt = 0;
    while (k != 0) {
        b[cnt] = k % 2;
        cnt++;
        k /= 2;
    }
    int ans = 0;
    for (int i = 0; i < cnt; ++i) {
        ans += a[i] * b[i];
    }
    cout << ans << endl;
}

Submission Info

Judge Result