#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using vll=vector<long long>;
template<typename T>T get(){T r;cin>>r;return r;}
template<typename T>vector<T> get_v(ll n){vector<T> v;for(int i=0;i!=n;i++){v.push_back(get<T>());};return v;}
template<typename T>void show_v(vector<T> v){
    for(ll i=0;i!=v.size()-1;i++) cout<<v[i]<<" ";cout<<*(v.end()-1)<<endl;}

int main() {
    ll n,k,t;
    cin>>n>>k>>t;
    cout<<(t*n/k>1?"Yes":"No")<<endl;

    system("pause");
}