#include <iostream>
using namespace std;
int main(){
int h,w,k;
cin >> h >> w >> k;
if(h == 1 or w == 1){
if(h==2 or w == 2){
cout << "YES" << endl;
} else {
cout << "NO"<<endl;
}
}

if(h%2==1 and w%2==1){
cout << "NO" << endl;
} else {
cout << "YES" << endl;
}
return 0;
}