#include<iostream>
#include<cstdio>
#include<cstring>
#include <cstdlib>  
#include <cmath>   
#include<cctype>
#include<string>
#include<set>
#include <map>
#include<algorithm>
#include <functional>
#include<vector>
#include<climits>
#include<stack>
#include<queue>
#include <deque>
#include <climits>
#include <typeinfo>
#include <utility> 
#define all(x) (x).begin(),(x).end()
#define rep(i,m,n) for(int i = m;i < n;++i)
#define pb push_back
#define fore(i,a) for(auto &i:a)
#define rrep(i,m,n) for(int i = m;i >= n;--i)
#define INF INT_MAX/2
using namespace std;
using ll = long long;
using R = double;
const ll MOD = 1e9 + 7;
const ll inf = 1LL << 50;
struct edge { ll from; ll to; ll cost; };

int n, m, c;

void ok() {
	cout << "YES" << endl;
}
void ng() {
	cout << "No" << endl;
}

int main(){
	cin >> n >> m >> c;


	if (n == 1 || m == 1) {
		if (m == 1)swap(n, m);
		if (m == 2)ok();
		else ng();
	}
	else {
		if (m % 2 == 0 || n % 2 == 0)ok();
		else ng();
	}

	return 0;
}