#include <iostream>
#include <vector>
#include <string>
#include <cstring>
#include <math.h>
#include <cmath>
#include <limits.h>
#include <map>
#include <set>
#include <queue>
#include <algorithm>
#include <functional>
#include <stdio.h>
using namespace std;

long long MOD = 1000000007;

int main() {
    
    int N,M,C;
    cin >> N >> M >> C;
    
    if ( N == 1 || M == 1 ) {
        cout << ( ( N*M == 2 ) ? "YES" : "NO" ) << endl;
    }
    else {
      cout << ( ( N%2 == 0 || M%2 == 0 ) ? "YES" : "NO" ) << endl;  
    }
    
    
    
    return 0;
}