#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s ,s1,s2;
	getline(cin,s);
    int p;
    p = s.find(' ');
	s1 = s.substr(0,p);
	//cout<<s1<<endl; 
    s2 = s.substr(p+1,s.size()-1-p);
    //cout<<s2<<endl;
	if(s1 == s2){
		cout<<"0";
	}else{
		for(int i = 0;i < 100;i++){
			if(s1[i] != s2[i]){
				cout << s1[i] -s2[i];
				break;
			}
		}
	}
 	return 0;
}
/**************************************************************
	Problem: 1848
	User: admin
	Language: C++
	Result: Accepted
	Time:74 ms
	Memory:2076 kb
****************************************************************/