// https://yukicoder.me/problems/no/508
#include <bits/stdc++.h>
using namespace std;
#define int long long
#define REP(i, n) FOR(i, 0, n)
#define FOR(i, s, n) for (int i = (s), i##_len = (n); i < i##_len; ++i)
#define ALL(obj) (obj).begin(), (obj).end()
#define ALLR(obj) (obj).rbegin(), (obj).rend()
#define CEIL(a, b) ((a - 1) / b + 1)

void solve() {
    int N, K, T;
    cin >> N >> K >> T;
    if (K * T < abs(N)) {
        cout << "No\n";
    } else {
        cout << "Yes\n";
    }
}

signed main() {
    cin.tie(nullptr)->sync_with_stdio(false);
    solve();
}