The Three Topics codechef solution in c++
#include<iostream>
#define ll long long
using namespace std;
void solve()
{
ll a, b, c, x;
cin >> a >> b >> c >> x;
if (a==x||b==x||c==x)
cout << "YES\n";
else
cout << "NO\n";
}
int main()
{
solve();
return 0;
}