160728

import java.util.Scanner;




public class date0728 {


/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
/*int i ,sum;
for(i=100;i<1000;i++){
int a = i/100;
int b=i/10%10;
int c=i%10;
sum=a*a*a+b*b*b+c*c*c;
if(i==sum){
System.out.println(i);
}
}*/
/*double i=1,sum=10000;
while(i<6){
sum=sum*1.003;
i++;
}
System.out.println(sum);
*/
/*int i,sum=0;
for(i=1;i<1001;i++){
if(i%7!=0){
sum=sum+i;
}
}
System.out.println(sum);*/
Scanner in=new Scanner(System.in);
/*long i ,t=0;
long n=in.nextLong();
for(i=2;i<n;i++){
if(n%i==0){
System.out.println(i);
t++;
}
}
if(t==0)
System.out.println("yes");

*/



/*long n=in.nextLong();
long i ,t;
while(n>0){
t=n%10;
n=n/10;
System.out.println(t);

}
*/
/*
int i,j,sum = 0;
for(i=1,j=100;i<51&&j>50;i++,j--){
sum+=i+j;
}
System.out.println(sum);
*/
/*int i,t=1,s=1,sum=0;
System.out.print("1 1 ");
for(i=3;i<=20;i++){
sum=s+t;
t=s;
s=sum;
System.out.print(sum+" ");
if(i%5==0)
System.out.println();
}
*/
/*int sum=0,i;
for(i=1;i<100;i++){
if(i%3!=0){
sum=sum+i;
if(sum>=2000){
System.out.println(sum+" "+i);
break;
}
}
}*/
/*int i, sum = 0, a = 0;
for (i = 0; i < 10; i++) {
int n = in.nextInt();
if (n == 999)
break;
if (n > 0) {
sum = sum + n;
a++;
} else
continue;
}
System.out.println(a + " " + sum);
*/
int i,n;
System.out.println("请选择项目：1、2、3、4");
do{
n=in.nextInt();
if(n!=1&&n!=2&&n!=3&&n!=4){
System.out.println("请重新输入");
}
}while(n!=1&&n!=2&&n!=3&&n!=4);

System.out.println("执行"+n);








}


}