Problem Statement

AtCoder Beginner Contest usually starts at 21:00 JST and lasts for 100 minutes.
You are given an integer K between 0 and 100 (inclusive). Print the time K minutes after 21:00 in the HH:MM format, where HH denotes the hour on the 24-hour clock and MM denotes the minute. If the hour or the minute has just one digit, append a 0 to the beginning to represent it as a 2-digit integer.

Input

Input is given from Standard Input in the following format:
K

Output

Print the time K minutes after 21:00 in the format specified in the Problem Statement.

Constraints

• K is an integer between 0 and 100 (inclusive).

Sample Input 1

63

Sample Output 1

22:03

63 minutes after 21:00, it will be 22:03, so 22:03 should be printed.
The following outputs would be judged incorrect:

• 10:03
• 22:3

Sample Input 2

45

Sample Output 2

21:45

Sample Input 3

100

Sample Output 3

22:40

见题面 Input 部分

见题面 Output 部分