#include<iostream>
#include<string>
#include<algorithm>
#include<cctype>
#include<set>
#include<bitset>
#include<math.h>
#include<map>
#include<queue>
#include<iomanip>
using namespace std;


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