Description

Given two time points, determine how many seconds are needed to go from the first time point to the second time point, ensuring that the first time point is earlier than the second.

Input Format

Input consists of two lines: the first line is the start time, and the second line is the end time. Each time is represented in the format xx:yy:zz, where xx is the hour, yy is the minute, and zz is the second.

Output Format

A single integer representing the difference between the two times in seconds.

Sample

12:34:56
12:35:00

4