Submission #1121299

#	Time	Username	Problem	Language	Result	Execution time	Memory
1121299		Dan4Life	Remittance (JOI19_remittance)	C++17	0 / 100	2 ms	596 KiB

remittance

#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define sz(a) (int)a.size()
#define all(a) begin(a),end(a)
#define int long long
const int N = (int)1e6+10;
int n, a[N], b[N];

int32_t main(){
	ios_base::sync_with_stdio(false); cin.tie(0);
	cin >> n; int ok = 1;
	for(int i = 0; i < n; i++) cin >> a[i] >> b[i];
	int xd = n+100000, i = 1;
	while(xd--){
		int nx = (i+1==n?0:i+1);
		int tot = (a[i]-b[i]+1)/2;
		if(a[i]>b[i]) a[nx]+=tot,a[i]-=tot*2; 
		i = nx;
	}
	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