#include <stdio.h>
int main() {
    char choice = 0;
    int Walk_Rate = 1;
    int taxi_Rate = 10;
    int distance = 0;
    int wait_time = 10;

    scanf("%d",&distance);

    if (distance * 1.0 / Walk_Rate > distance * 1.0 / taxi_Rate + 10) {
        printf("v");
    
    }
    else {
        printf("w");
    }

}