题解 | #牛牛的通勤#

import java.util.Scanner;

/**
 * @author zmstart
 * @create 2022-03-18 20:17
 */
public class Main {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int d = scan.nextInt();

        if (d >= 100/9.0){
            System.out.println('v');
        }else{
            System.out.println('w');
        }
    }
}