CF 2019 A

#include<bits/stdc++.h>
using namespace std;

int main()
{
    string x,a;
    cin>>x;
    int i,cnt=0;
    for(i=0;i<5;i++){
        cin>>a;
        if(a[0]==x[0] || a[1]==x[1])
            cnt++;
    }
    if(cnt==0)
        cout<<"NO"<<endl;
    else
        cout<<"YES"<<endl;
    return 0;
}