#include <bits/stdc++.h>
#define rep(a,n) for (ll a = 0; a < (n); ++a)
using namespace std;
//using namespace atcoder;
using ll = long long;
typedef pair<ll,ll> P;
typedef pair<ll,P> PP;
typedef vector<vector<int> > Graph;
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }
const ll INF = 1e18;

int main(){
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    //input
    ll n,k,t;
    cin >> n >> k >> t;
    n = abs(n);
    if(k*t>=n){
        cout << "Yes" << endl;
    }
    else{
        cout << "No" << endl;
    }

    return 0;
}