Submission #397738

#	Time	Username	Problem	Language	Result	Execution time	Memory
397738		timmyfeng	Remittance (JOI19_remittance)	C++17	0 / 100	1 ms	332 KiB

remittance

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

const int N = 1000000;

int a[N], b[N];

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);

    int n;
    cin >> n;

    for (int i = 0; i < n; ++i) {
        cin >> a[i] >> b[i];
    }

    while (true) {
        bool delta = false;

        for (int i = 0; i < n; ++i) {
            int send = max(0, (a[i] - b[i]) / 2);
            delta |= send > 0;
            a[(i + 1) % n] += send;
            a[i] -= 2 * send;
        }

        if (!delta) {
            break;
        }
    }

    cout << (equal(a, a + n, b) ? "Yes" : "No") << "\n";
}

• Subtask 1: 0 / 15
• Subtask 2: 0 / 40
• Subtask 3: 0 / 45