Expedition Ledger Date Normalizer

The Meridian Expedition Archive is digitizing a century of field-clerk ledgers. Every ledger entry records its date the way clerks always wrote it in the field: an ordinal day such as "1st", "22nd", or "30th", a three-letter month abbreviation (one of Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec), and a four-digit year, separated by single spaces -- for example "21st Apr 1998".

Write a program that converts one such date stamp into the archive's canonical ISO form so every entry sorts and compares correctly: YYYY-MM-DD, where the year keeps all four digits and the month and day are always exactly two digits, zero-padded when necessary.

Input format

A single line containing the date stamp in the form <ordinal-day> <month-abbrev> <year>.

Output format

A single line containing the ISO date YYYY-MM-DD.

Constraints

• The ordinal day's numeric part is between 1 and 31 inclusive, followed by its ordinal suffix ("st", "nd", "rd", or "th").
• The month abbreviation is exactly one of: Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec.
• The year is a four-digit integer between 1900 and 2100 inclusive.
• The three tokens are separated by exactly one space each, with no leading or trailing whitespace.

21st Oct 2052

2052-10-21

6th Jun 1933

1933-06-06