#include <bits/stdc++.h>
using namespace std;
#define int long long
#define rep(i,j) for(int i=0; i<j; i++)
#define vvi vector<vector<int>>

signed main() {
    int n,h,w; cin>>n>>h>>w;
    if(h==1||w==1||h/w==1){
    	cout<<"Yes"<<endl;
    }
    else{
    	cout<<"No"<<endl;
    }
}