题解 | #牛牛的通勤#

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
public class Main{
    public static void main(String[] args) throws IOException{
        BufferedReader bf = new BufferedReader(new InputStreamReader(System.in));
        String str = bf.readLine();
        int distince = Integer.parseInt(str);
        int walking_time = distince/1;
        int taxi_time = 10 + distince/10;
        if(walking_time>taxi_time){
            System.out.println("v");
        }else{
            System.out.println("w");
        }
        
    }
}