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Task :: IPv6
In IPv6, the next generation of the Internet protocol, an IP address is 128 bits long. The full text representation of an IPv6 address consists of 8 groups of 4 hexadecimal digits each, where groups are separated by colon characters ':'. For example: 2001:0db8:85a3:0000:0000:8a2e:0370:7334
To compress this textual representation, we are allowed the following transformations:
• All or some leading zeroes in a group can be removed. For example, the above address can be simplified as: 2001:db8:85a3:0:00:8a2e:370:7334
• Additionally, one or more consecutive groups of zeroes can be replaced by adouble colon "::". The above address becomes: 2001:db8:85a3::8a2e:370:7334 This last simplification can be done only once so that the resulting text representation is never ambiguous. Write a program that takes a valid(possibly compressed) text representation of an IPv6 address and outputs its full text representation.

INPUT:
The first line contains a string of at most 39 characters, a valid text representation of an IPv6 address. The string consists of digits '0'.'9', lowercase letters 'a'.'f' and colon characters ':'.

OUTPUT:
Output the full representation of the given IPv6 address.


Input

25:09:1985:aa:091:4846:374:bb

Output

0025:0009:1985:00aa:0091:4846:0374:00bb
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Task info
Name:IPv6
Time:0.9 sec.
Memory:64 MB
#Tests:10
AddedBy: dario-dsa
Source:DMIH 2009
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Difficulty:

4.6 (10 votes)
Quality:

4.6 (9 votes)
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