제출 #1117215

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1117215		Marco_Escandon	송금 (JOI19_remittance)	C++11	0 / 100	1 ms	504 KiB

remittance

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
#define x first
#define y second
ll dx[]={1, 1, 0,-1,-1, -1, 0, 1};
ll dy[]={0, 1, 1, 1, 0, -1,-1,-1};
int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);
    ll n;
    cin>>n;
    vector<ll> a(n),b(n);
    for(int i=0; i<n; i++)
    {
        cin>>a[i]>>b[i];
    }
    ll pl=true;
    while(pl)
    {
        pl=false;
        for(int i=0; i<n; i++)
        {
            if(a[i]>b[i]&&(b[i]>1||(a[i]-b[i])%2==0))
            {
                ll t1=(a[i]-b[i]+1)/2;
                a[i]-=t1*2;
                a[(i+1)%n]+=t1;
                pl=true;
            }
            if(a[i]>b[i])
            {
                ll t1=(a[i]-b[i])/2;
                a[i]-=t1*2;
                a[(i+1)%n]+=t1;
                if(t1!=0)
                pl=true;
            }
        }
    }
    if(a!=b)
    {
        cout<<"No";
    }
    else cout<<"Yes";
    return 0;
}

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