题解 | #吔我大炮！#

#include<bits/stdc++.h>
using namespace std;
int attack(int x,int y){
    return x*y;
}
bool flag(int a,int b,int c){
    int ans=attack(a,b);
    if(ans>c) return false;
    else return true;
}
void solve(){
    int a,b,c;
    cin >>a>>b>>c;
    if(!flag(a,b,c)) cout <<"NO"<<endl;
    else cout <<"YES\n";
}
int main(){
  int n=1;
  while(n--){
    solve();
    return 0;
  }
}