import java.util.*;
import java.math.*;
class demo{
public static void main(String[]args){
boolean x=Math.random()<0.5;
System.out.println(x);}
};
class demo1{
public static void main(String[]args){
if(x){
System.out.println("YES");
};
}
}
//if(x)非法表达式开始
import java.math.*;
class demo{
public static void main(String[]args){
boolean x=Math.random()<0.5;
System.out.println(x);}
};
class demo1{
public static void main(String[]args){
if(x){
System.out.println("YES");
};
}
}
//if(x)非法表达式开始
