#define _GLIBCXX_DEBUG
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll,ll> pi;
#define ALL(x) x.begin(),x.end()
#define LB(A,x) (ll)(lower_bound(ALL(A),x)-A.begin())
#define rep(i,a,b) for(int i=a;i<b;i++)
using vi = vector<int>; 
using vvi = vector<vi>; 
using li =vector<ll>;
using lli=vector<li>;
const long long mod=998244353;
//for (auto [key, val] : mp)
int main() { 
  int a,b;cin>>a>>b;
  bool e=1,o=0;
  rep(i,0,a){
  	int c;cin>>c;
  	if(c%2==1)e=0;
  }
  rep(i,0,b){
  	int c;cin>>c;
  	if(c%2==1)o=1;
  }
  if(e&o)cout<<"No";
  else cout<<"Yes";
}