#include <algorithm> #include <cfloat> #include <climits> #include <cmath> #include <complex> #include <cstdio> #include <cstdlib> #include <cstring> #include <functional> #include <iostream> #include <map> #include <memory> #include <queue> #include <set> #include <sstream> #include <stack> #include <string> #include <utility> #include <vector> using namespace std; #define sz size() #define pb push_back #define mp make_pair #define fi first #define se second #define all(c) (c).begin(), (c).end() #define rep(i,a,b) for(int i=(a);i<(b);++i) #define clr(a, b) memset((a), (b) ,sizeof(a)) #define MOD 1000000009 int main(){ int n,m,c; cin>>n>>m>>c; if(n*m%2==1 || (n==1&&m!=2) || (m==1&&n!=2)){ cout << "NO" << endl; } else{ cout << "YES" << endl; } return 0; }