#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
int main() {
    ll N, K, T;
    cin >> N >> K >> T;
    N = abs(N);
    if (K * T < N) {
        cout << "No\n";
    } else {
        cout << "Yes\n";
    }
    return 0;
}