医托贷马

#include<iostream>
using namespace std;
int main()
{
	string a,b,c,d;
	cin>>a>>b>>c;
	d=a+b;
	if(d.find(c)!=-1) cout<<c<<" is substring of "<<a<<" and "<<b;
	else cout<<c<<" is not substring of "<<a<<" and "<<b;
}