Submission #514925

#	Time	Username	Problem	Language	Result	Execution time	Memory
514925		Abrar_Al_Samit	Remittance (JOI19_remittance)	C++17	0 / 100	0 ms	204 KiB

remittance

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

void PlayGround() {
	int n;
	cin >> n;
	long long a[n], b[n];
	for(int i=0; i<n; ++i) {
		cin >> a[i] >> b[i];
	}
	for(int st=0; st<n; ++st) {
		long long have[n];
		for(int i=0; i<n; ++i) {
			have[i] = a[i];
		}
		int lastRem = -1;
		int now = 0;
		int v = st;
		while(1) {
			long long can = max(0LL, have[v]-b[v]);
			if(can&1) --can;
			if(can) {
				lastRem = now;
			} else {
				if(now-lastRem==n) break;
			}
			++now;
			have[v] -= can;
			can /= 2;
			have[(v+1)%n] += can;
			v = (v+1)%n;
		}
		bool ok = 1;
		for(int i=0; i<n; ++i) {
			ok &= have[i]==b[i];
		}
		if(ok) {
			cout << "Yes\n";
			return;
		}
	}
	cout << "No\n";

	//O(N^2logN)

	// cerr << "Time elapsed: " << 1.0 * clock() / CLOCKS_PER_SEC << " s.\n";
}
int main() {
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	PlayGround();
	return 0;
}

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