#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: wenda
	Language: C++
	Result: Accepted
	Time:57 ms
	Memory:2076 kb
****************************************************************/