#include<cstdio>
#include<queue>
#define rep(i,a) for(int i=0;i<(a);++i)

int N, M, C;
std::queue<int> que;

int main()
{
	scanf( "%d%d%d", &N, &M, &C );
	
	if( N==1 || M==1 )
	{ puts( M*N==2?"YES":"NO" ); return 0; }

	puts( N&1&&M&1?"NO":"YES" );

	return 0;
}