Submission #140636

#	Time	Username	Problem	Language	Result	Execution time	Memory
140636		MatheusLealV	Remittance (JOI19_remittance)	C++17	100 / 100	546 ms	32552 KiB

remittance

#include <bits/stdc++.h>
#define N 1000020
using namespace std;

int n, a[N], b[N], t[N];

int main()
{
	ios::sync_with_stdio(false); cin.tie(0);

	cin>>n;

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

		t[i] = a[i] - b[i];
	}

	for(int c = 0; c < 40; c++)
	{
		for(int i = 0; i < n; i++)
		{
			if(t[i] > 0)
			{
				int dt = min(a[i]/2, (t[i] + 1)/2);

				t[i] -= 2*dt;

				a[i] -= 2*dt;

				t[(i + 1)%n] += dt;

				a[(i + 1)%n] += dt;
			}
		}
	}

	for(int i = 0; i < n; i++) if(t[i])
	{
		cout<<"No\n";

		return 0;
	}

	cout<<"Yes\n";
}

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