#include <bits/stdc++.h>
using namespace std;
int main() {
  string s, s1, s2, s3, s4, s5;
  cin >> s;
  cin >> s1 >> s2 >> s3 >> s4 >> s5;
  if (s[0] == s1[0] || s[0] == s2[0] || s[0] == s3[0] || s[0] == s4[0] ||
      s[0] == s5[0])
    cout << "YES" << endl;
  else if (s[1] == s1[1] || s[1] == s2[1] || s[1] == s3[1] || s[1] == s4[1] ||
           s[1] == s5[1])
    cout << "YES" << endl;
  else
    cout << "NO" << endl;
}
