#define _USE_MATH_DEFINES
#include<stdio.h>
#include<string>
#include<iostream>
#include<cctype>
#include<cstdio>
#include<vector>
#include<stack>
#include<queue>
#include <algorithm>
#include<math.h>
#include<set>
#include<map>
#include<iomanip>

//#include<bits/stdc++.h>


using namespace std;


int main() {
	
	long a, b, c;
	cin >> a >> b >> c;
	if (a > b)swap(a, b);
	if (a == 1) {
	if(b==2)cout << "YES" << endl;
	else cout << "NO" << endl;
	}
	else {
		if (a*b%2==0)cout << "YES" << endl;
		else cout << "NO" << endl;
	}
	return 0;


}