#include <iostream>
#include <ranges>
#include <algorithm>
#include <vector>
using namespace std;
using ll=long long;
int main(){
	cin.tie(nullptr);
	ios::sync_with_stdio(false);
	int n;
	cin>>n;
	int h,w;
	cin>>h>>w;
	if(h==1||w==1||h==w)cout<<"Yes"<<endl;
	else cout<<"No"<<endl;
}