#include <stdio.h>
#define PI 3.1415926
int main()
{
double R, v1, v2, r;
while(~scanf("%lf%lf%lf", &R, &v1, &v2))
r = R * v1 / v2;
printf((R - r) / v1 < PI * R / v2 ? "Yes\n" : "No\n");
}
return 0;