Submission #956698

#	Time	Username	Problem	Language	Result	Execution time	Memory
956698		rewer	Remittance (JOI19_remittance)	C++14	0 / 100	2 ms	4544 KiB

remittance

#include <bits/stdc++.h>
using namespace std;
#define int long long
int n,ar[1000050],br[1000050],c[1000050];
signed main(){
    cin>>n;
    for(int i=1;i<=n;i++){
        cin>>ar[i]>>br[i];
    }
    for(int i=1;i<=5000;i++){
        bool flag=0;
        for(int i=1;i<=n;i++){
            c[i]=ar[i];
        }
        for(int i=1;i<=n;i++){
            int tmp=ar[i];
            if(ar[i]-br[i]>=2){
                ar[i]-=(ar[i]-br[i])/2*2;
                ar[i%n+1]+=(tmp-br[i])/2;
            }
        }
        for(int i=1;i<=n;i++){
            if(c[i]!=ar[i]){
                flag=1;
            }
        }
        if(!flag)break;
    }
    bool c2=0;
    bool flag=0,f2=0;
    for(int i=1;i<=n;i++){
        if(ar[i]==br[i]+1)c2=1;
        if(ar[i]!=br[i])flag=1;
        if(ar[i]>=2)f2=1;
    }
    if(!flag)cout<<"Yes\n";
    else if(!c2 &&f2)cout<<"Yes\n";
    else cout<<"No\n";
}

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