include<bits/stdc++.h>

using namespace std; int main( ) {

string s1,s2;
cin>>s1>>s2;
if (s1==s2){
	cout<<0;
	return 0;
}
int m=0,n=0;
while(1)
{
	if(m>=s1.length( )||n>=s2.length( ))
	{
		break;
	}
	else if(s1[m]!=s2[n]){
		cout<<(int)(s1[m]-s2[n]);
		return  0;
	}
	m++,n++;
}

}