Submission #1100918

#	Time	Username	Problem	Language	Result	Execution time	Memory
1100918		IBory	Remittance (JOI19_remittance)	C++17	0 / 100	1 ms	336 KiB

remittance

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

const int MAX = 1000007;
ll A[MAX];

int main() {
	ios::sync_with_stdio(0); cin.tie(0);
	ll N;
	cin >> N;
	for (int i = 0; i < N; ++i) {
		ll a, b;
		cin >> a >> b;
		A[i] = b - a;
	}

	for (int t = 0; t < 32; ++t) for (int i = 0; i < N; ++i) {
		if (A[i] < 0) {
			ll z = abs(A[i]) / 2LL;
			A[i] += z * 2;
			A[(i + 1) % N] -= z;
		}
	}

	for (int i = 0; i < N; ++i) {
		if (A[i]) {
			cout << "No";
			return 0;
		}
	}

	cout << "Yes";
	return 0;
}

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