Submission #61559569

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#include <bits/stdc++.h>
using namespace std;
using ll = long long;
int main() {
    int N;
    cin >> N;
    int A[N];
    for (int i = 0; i < N; i++)
        cin >> A[i];
    ll ans = 0;
    for (int i = 0; i < N; i++) {
        int cnt = lower_bound(A, A + N, A[i] * 2) - A;
#ifdef LOCAL
        cout << A[i] << "(" << A[i] / 2 << "): " << cnt << '\n';
#endif
        ans += N - cnt;
    }
 
 
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#include <bits/stdc++.h>
using namespace std;
using ll = long long;

int main() {
    int N;
    cin >> N;
    int A[N];
    for (int i = 0; i < N; i++)
        cin >> A[i];

    ll ans = 0;
    for (int i = 0; i < N; i++) {
        int cnt = lower_bound(A, A + N, A[i] * 2) - A;

#ifdef LOCAL
        cout << A[i] << "(" << A[i] / 2 << "): " << cnt << '\n';
#endif

        ans += N - cnt;
    }

    cout << ans << '\n';
}

Submission Info

Judge Result