Submission #963023

#	Time	Username	Problem	Language	Result	Execution time	Memory
963023		happy_node	Remittance (JOI19_remittance)	C++17	0 / 100	1 ms	2648 KiB

remittance

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
 
const int MX=1e6+5;
int N;
ll A[MX], B[MX];
 
int main() {
	cin.tie(0); ios_base::sync_with_stdio(0);
 
	cin>>N;
	for(int i=0;i<N;i++) cin>>A[i]>>B[i];
 
	for(int k=0;k<51;k++) {
		for(int i=N-1;i>=0;i--) {
			if(B[i]>A[i]) {
				ll d=B[i]-A[i];
				if(i==0) {
					B[N-1]+=2*d;
				} else {
					B[i-1]+=2*d;
				}
				B[i]=A[i];
			}
		}
	}


 
	bool ok=1;
	for(int i=0;i<N;i++) 
		ok&=A[i]==B[i];
 
	cout<<(ok?"Yes":"No")<<'\n';
}

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