Petya and Strings

Problem statement

An alphabetical directory compares two equal-length names without considering letter case. Convert letters conceptually to lowercase and report whether the first name comes before, equals, or comes after the second name.

Input format

Two lines: equal-length English-letter strings.

Output format

Print -1 if the first is smaller, 0 if equal, or 1 if larger.

Constraints

1 <= length <= 100; uppercase and lowercase English letters only.

Sample input

AbCd
aBcD

Sample output

0