#include <bits/stdc++.h>
using namespace std;
int main(void){
    long long a,b,c;
    cin >>a>>b>>c;
    if(abs(a) <= b*c)
    {
        cout<< "Yes"<< endl;
    }
    else if(abs(a) > b*c)
    {
        cout <<"No" << endl;
    }
}