题解 | #牛牛的通勤#

import java.util.*;
public class Main{
public static void main(String args[]){
Scanner in=new Scanner(System.in);
    while(in.hasNextInt()){
        int a=in.nextInt();
     if(a<=10){
         System.out.println("w");
     }
        else{
            System.out.println("v");
        }
       
    }
}
}