#include <stdio.h>
#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define modulo 1000000007
#define mod(mod_x) ((((long long)mod_x+modulo))%modulo)
#define Inf 10000000000000


int main(){
	
	long long N,K,T;
	cin>>N>>K>>T;
	N = abs(N);
	
	if(K*T>=N)cout<<"Yes"<<endl;
	else cout<<"No"<<endl;
	
    return 0;
}