#include <bits/stdc++.h>
using namespace std;
#define REP(i, n)           for(int(i)=0;(i)<(n);++(i))

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