254. Ладья

#include <iostream>
#include <fstream>
#include <cmath>
#include <math.h>


using namespace std;

int a, b, c, d;

int main(int argc, const char * argv[]) {

    cin >> a >> b >> c >> d;
    if (a == c || b == d ) {
        cout << "YES";
    }
    else{
        cout << "NO";
    }
}