Submission #564079

#	Time	Username	Problem	Language	Result	Execution time	Memory
564079		4fecta	Remittance (JOI19_remittance)	C++17	0 / 100	0 ms	212 KiB

remittance

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define int ll
#define ld long double
#define pii pair<int, int>
#define f first
#define s second
#define boost() cin.tie(0), cin.sync_with_stdio(0)

const int MN = 1000005;

int n;
pii a[MN];

int32_t main() {
    boost();

    cin >> n;
    for (int i = 0; i < n; i++) cin >> a[i].f >> a[i].s;
    for (int t = 0; t < 30; t++) {
        for (int i = 0; i < n; i++) {
            if (a[i].f <= a[i].s) continue;
            int d = (a[i].f - a[i].s) / 2;
            a[i].f -= d * 2;
            a[(i + 1) % n].f += d;
        }
    }
    bool ok = 1;
    for (int i = 0; i < n; i++) ok &= a[i].f == a[i].s;
    cout << (ok ? "YES\n" : "NO\n");

    return 0;
}

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