#include <iostream>
using namespace std;
int main(){
    int h,w;cin>>h>>w;
    if(h == 1 || w == 1){
        cout << "Yes" << endl;
        return 0;
    }
    int a,b,c,d;cin>>a>>b>>c>>d;
    if(abs(c-a+d-b)%2 == 1)cout << "Yes" << endl;
    else cout << "No" << endl;
}