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1997-98 North Central Regionals
Numerically Speaking -- Problem 6
A developer of crossword puzzles (and other similar word games) has decided
to develop a mapping between every possible word with from one to twenty
characters and unique integers. The mapping is very simple, with the ordering
being done first by the length of the word, and then alphabetically.
Part of the list is shown below.
a 1
b 2
...
z 26
aa 27
ab 28
...
snowfall 157,118,051,752
...
Your job in this problem is to develop a program which can translate, bidirectionally,
between the unique word numbers and the corresponding words.
Input
Input to the program is a list of words and numbers, one per line starting
in column one, followed by a line containing a single asterisk in column one.
A number will consist only of decimal digits (0 through 9) followed immediately
by the end of line (that is, there will be no commas in input numbers). A word
will consist of between one and twenty lowercase alphabetic characters (a
through z).
Output
The output is to contain a single line for each word or number in the input data.
This line is to contain the word starting in column one, followed by an appropriate
number of blanks, and the corresponding word number starting in column 23. Word
numbers that have more than three digits must be separated by commas at thousands,
millions, and so forth.
Sample Input
29697684282993
transcendental
28011622636823854456520
computationally
zzzzzzzzzzzzzzzzzzzz
*
Expected Output
elementary 29,697,684,282,993
transcendental 51,346,529,199,396,181,750
prestidigitation 28,011,622,636,823,854,456,520
computationally 232,049,592,627,851,629,097
zzzzzzzzzzzzzzzzzzzz 20,725,274,851,017,785,518,433,805,270
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Ed Karrels.
Last updated November 14, 1997