#include <cstdio>
#include <algorithm>

int main(){
    int N, M, C;
    scanf("%d %d %d", &N, &M, &C);

    if(std::min(N, M) == 1){
        puts("NO");
    }else{
        if(N % 2 == 0 || M % 2 == 0){
            puts("YES");
        }else{
            puts("NO");
        }
    }
}