Submission #795123

#	Time	Username	Problem	Language	Result	Execution time	Memory
795123		raysh07	송금 (JOI19_remittance)	C++17	100 / 100	626 ms	36460 KiB

remittance

#include<bits/stdc++.h>
 
using namespace std;
#define int long long
 
const int MAX_N = 1e6;
int n,a[MAX_N], b[MAX_N];
signed main(){
    cin>>n;
 
    for(int i = 0; i<n; i++){
        cin>>a[i];
        cin>>b[i];
    }
 
    for(int turn = 0; turn<35; turn++){
        for(int i = 0; i<n; i++){
            int dif= (a[i]-b[i]+1)/2;
            if(dif>0 && a[i]-2*dif>=0){
                a[i]-=2*dif;
                a[(i+1)%n] += dif;
            }
        }
    }
 
    bool ok = true;
 
    for(int i = 0; i<n; i++){
        ok &= a[i]==b[i];
    }
 
    if(ok){
        cout<<"Yes"<<endl;
    }
    else{
        cout<<"No"<<endl;
    }
}

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