#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define chmax(x,y) x = max(x,y)
using ll = long long;
using P = pair<int,int>;

int main(){
    ll n,k,t; cin>>n>>k>>t;
    if(n/k<=t){
        cout << "Yes" << endl;
    }else{
        cout << "No" << endl;
    }
}