#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; }