#include<bits/stdc++.h>
using namespace std;
int n,t,m;
int main()
{
	cin>>t>>n>>m;
	if(t*m>=n) cout<<"yes";
	else cout<<"no"; 
	return 0;
}

#include<bits/stdc++.h> using namespace std; int n,t,m; int main() { cin>>t>>n>>m; if(t*m>=n) cout<<"yes"; else cout<<"no"; return 0; }