#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>

char* solve(int32_t n, uint32_t k, uint32_t t) {
  return k * t >= abs(n) ? "Yes" : "No";
}

int32_t main() {
  int32_t n;
  uint32_t k, t;
  scanf("%d %u %u", &n, &k, &t);
  puts(solve(n, k, t));
}