Submission #1024959

#	Time	Username	Problem	Language	Result	Execution time	Memory
1024959		vjudge1	Remittance (JOI19_remittance)	C++17	100 / 100	165 ms	32592 KiB

remittance

#include <bits/stdc++.h>
using namespace std;
 
#define ll long long
#define ld long double
#define pii pair<int, int>
#define pll pair<ll, ll>
#define pld pair<ld, ld>
#define pb push_back
#define fi first
#define se second
#define debug(x) cout << #x << " => " << x << endl
#define all(x) x.begin(),x.end()

int main()
{
	ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
	int n;cin>>n;
	int a[n],b[n],c[n];
	for(int i=0;i<n;i++) cin>>a[i]>>b[i];
	for(int i=0;i<n;i++) c[i]=a[i]-b[i];
	int i=0,cnt=0;
	while(cnt!=n+1)
	{
		if(c[i]<=1) cnt++;
		else c[(i+1)%n]+=(c[i]/2),c[i]%=2,cnt=0;
		if(c[i]==1 && b[i]!=0)c[i]-=2,c[(i+1)%n]+=1,cnt=0;
		i=(i+1)%n;
	}
	bool ok=1;
	for(i=0;i<n;i++) if(c[i]!=0) ok=0;
	cout<<(ok?"Yes":"No");
	return 0;
}

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