a=input()
b=[i for i in input().split()]
for i in b:
if a[0]==i[0]:
print("YES")
break
if a[1]==i[1]:
print("YES")
break
else:
print("NO")
#include<iostream>
#include<bits/stdc++.h>
using namespace std;
#define MOD 1000000007
#define pb push_back
#define forn(i,n) for(int i=0;i<n;i++)
#define all1(x) x.begin(), x.end()
#define all2(x) x.rbegin(), x.rend()
#define pairs pair<int,int>
#define debug(v) for(long long i=0;i<v.size();i++)cout<<v[i]<<" ";cout<<endl;
#define debugP(v) for(long long i=0;i<v.size();i++)cout<<v[i].first<<" "<<v[i].second<<endl;
#define fast ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);
#define int long long
#define pi 3.14159265358979323846
#define endli "\n";
void init()
{
#ifndef ONLINE_JUDGE
freopen("input.txt", "r", stdin);
freopen("output.txt", "w", stdout);
#endif // ONLINE_JUDGE
}
void solve()
{
string n;
cin >> n;
for (int i = 0; i < 5; i++)
{
string s;
cin >> s;
if (s[0] == n[0] || s[1] == n[1])
{
cout << "YES";
return;
}
}
cout << "NO" << endli;
}
signed main() {
init();
int t = 1;
// cin >> t;
while(t--)
{
solve();
}
}
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