Submission #155347

#	Time	Username	Problem	Language	Result	Execution time	Memory
155347		mdn2002	송금 (JOI19_remittance)	C++14	0 / 100	62 ms	256 KiB

remittance

#include<bits/stdc++.h>
using namespace std;
long long mod=1e9+7;
int n,a[10],b[10];
bool t=false;
void f(int num)
{
    if(num==5)return;
    bool tt=true;
    for(int i=0; i<n; i++)
    {
        if(a[i]!=b[i])tt=false;
    }
    t=tt;
    if(t==true)
    {
        cout<<"YES";
        exit(0);
    }
    for(int i=0; i<n; i++)
    {
        for(int j=0; j<=a[i]; j+=2)
        {
            if(i!=0)
            {
                a[i]-=j;
                a[i-1]+=j/2;
                f(num+1);
                a[i]+=j;
                a[i-1]-=j/2;
            }
            else
            {
                a[i]-=j;
                a[n-1]+=j/2;
                f(num+1);
                a[i]+=j;
                a[n-1]-=j/2;
            }
            if(i!=n-1)
            {
                a[i]-=j;
                a[i+1]+=j/2;
                f(num+1);
                a[i]+=j;
                a[i+1]-=j/2;
            }
            else
            {
                a[i]-=j;
                a[0]+=j/2;
                f(num+1);
                a[i]+=j;
                a[0]-=j/2;
            }
        }
    }
}
int main()
{
    cin>>n;
    for(int i=0; i<n; i++)cin>>a[i]>>b[i];
    f(0);
    cout<<"NO";
}

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