#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");
}
}

京公网安备 11010502036488号