int main()
{
int s;
int v;
float t;
scanf("%d",&s); //s=vt,t=s/v
t=s/10.0+10;
if(s<t)
{
printf("w");
}
else
{
printf("v");
}
}
int main() { int s; int v; float t; scanf("%d",&s); //s=vt,t=s/v t=s/10.0" >