Submission #961836

#	Time	Username	Problem	Language	Result	Execution time	Memory
961836		Angus_Yeung	Remittance (JOI19_remittance)	C++17	0 / 100	2 ms	2516 KiB

remittance

#include <bits/stdc++.h>
#define x first
#define y second
#define pii pair<ll, ll>
typedef long long ll;
const ll MOD = 1000000007LL;
const ll INF = 1e15;
using namespace std;

ll n, a[1000010], b[1000010];

int main() {
	cin.tie(0); cout.tie(0);
	ios::sync_with_stdio(0);
	
	cin >> n;
	for (int i = 1; i <= n; i++) cin >> a[i] >> b[i];
	
	for (int j = 1; j <= 50; j++) {
		for (int i = 1; i <= n; i++) {
			if (a[i] > b[i]) {
				a[i%n+1] += (a[i]-b[i]+1)/2;
				a[i] -= ((a[i]-b[i]+1)/2)*2;
			}
		}
	}
	
	for (int i = 1; i <= n; i++) {
		if (a[i] != b[i]) {
			cout << "No\n";
			return 0;
		}
	}
	
	cout << "Yes\n";
	
	return 0;
}
/*



*/

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