#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <utility>
#include <map>
using namespace std;
typedef long long ll;
#define rep(i,n) for (int i = 0; i < int(n);i++)

int main(){
  ll n,k,t;
  cin >> n >> k >> t;
  n = abs(n);
  if (k*t >= n) cout << "Yes" << endl;
  else cout << "No" << endl;
  
  return 0;
   

}