#include<iostream>
#include<string>
#include<algorithm>
#include<cctype>
#include<set>
#include<bitset>
#include<math.h>
#include<map>
#include<queue>
#include<iomanip>
using namespace std;

int main(){
    string n, m;
    int n1, m1;
    cin >> n >> m;
    n1 = n[n.size()-1] - '0', m1 = m[m.size()-1] - '0';
    cout << (((!(n1%2) && !(m1%2)) || ((n1%2) && (m.size() > 1) && !(m1%2))) ? "Yes" : "No") << endl;
}