Submission #418537

#	Time	Username	Problem	Language	Result	Execution time	Memory
418537		MohamedAhmed04	Remittance (JOI19_remittance)	C++17	0 / 100	1 ms	332 KiB

remittance

#include <bits/stdc++.h>

using namespace std ;

const int MAX = 1e6 + 10 ;

long long a[MAX] , b[MAX] ;
int n ;

int main()
{
	ios_base::sync_with_stdio(0) ;
	cin.tie(0) ;
	cin>>n ;
	for(int i = 0 ; i < n ; ++i)
		cin>>a[i]>>b[i] ;
	long long sum1 = 0 , sum2 = 0 ;
	int cnt = 0 ;
	for(int i = 0 ; i < n ; ++i)
	{
		sum1 += a[i] , sum2 += b[i] ;
		cnt += (a[i] != b[i]) ;
	}
	while(sum1 >= sum2 && cnt > 0)
	{
		for(int i = 0 ; i < n ; ++i)
		{
			if(a[i] <= b[i])
				continue ;
			long long x = (a[i] - b[i] + 1ll) / 2ll ;
			int nxt = i+1 ;
			if(nxt == n)
				nxt = 0 ;
			a[i] -= x * 2ll , a[nxt] += x ;
		}
		sum1 = sum2 = cnt = 0 ;
		for(int i = 0 ; i < n ; ++i)
		{
			sum1 += a[i] , sum2 += b[i] ;
			cnt += (a[i] != b[i]) ;
		}
	}
	if(cnt == 0)
		cout<<"Yes\n" ;
	else
		cout<<"No\n" ;
	return 0 ;
}		

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