#include <iostream>
using namespace std;

long long a, b, c = -1, d;

int main()
{
 cin >> a >> b;

 for(int i = 0; i < 10000; i++)
 {
      if(a == d)
      {
             c++;
             break;
      }


      d = b / 10;
      d = b % 10;

 }

if(c == -1)
     cout << "No" ;
else
     cout << "Yes";

}