include<bits/stdc++.h>

using namespace std; int main(){

string s1, s2;
cin >> s1 >> s2;
bool control = true;
if(s1 == s2) {
	cout << 0;
	return 0;
}
int s1index = 0, s2index = 0;
while(control){
	if(s1index >= s1.length() || s2index >= s2.length()){
		break;
	}else if(s1[s1index] != s2[s2index]){
		cout << (int)(s1[s1index] - s2[s2index]);
		return 0;
	}
	s1index++,s2index++;	
}

}