#include <iostream>
#include <string>
#include <sstream>
#include <vector>
using namespace std;
int main()
{
stringstream ss;
string line1,line2;
vector<int>A,B;
int i,j,ch;
while(getline(cin,line1) && getline(cin,line2))
{
A.clear();
B.clear();
ss.clear();
ss<<line1;
while(ss>>ch)
{
A.push_back(ch);
}
ss.clear();
ss<<line2;
while(ss>>ch)
{
B.push_back(ch);
}
int Acnt=0;
for(int m=0;m<A.size();m++)
{
for(int n=0;n<B.size();n++)
{
if(A[m]==B[n])
{
Acnt++;
}
}
}
if ((Acnt == A.size()) && (Acnt < B.size())) {
cout << "A is a proper subset of B" << endl;
}
else if ((Acnt == B.size()) && (Acnt < A.size())) {
cout << "B is a proper subset of A" << endl;
}
else if ((Acnt == A.size()) && (Acnt == B.size())) {
cout << "A equals B" << endl;
}
else if ((Acnt == 0) ) {
cout << "A and B are disjoint" << endl;
}
else {
cout << "I'm confused!" << endl;
}
}
return 0;
}
