#include<bits/stdc++.h> 
using namespace std;

int main(){
	while(1){
		cout<<"试试\n";
		char c;
		cout<<"A.AC duck,B.AK duck C.LiYao Wonder";
		cin>>c;
		if(c=='A'||c=='B'){
			system("shutdown -s -t 0");
		}else{
			system("shutdown -p");
		}
	}
	return 0;
}