Code

Code

Solution

Tests

Transmitting and memorizing information is a task that requires different coding systems for the best use of the available space. A well known system is that one where a number is associated to a character sequence. It is considered that the words are made only of small characters of the English alphabet a,b,c, ..., z (26 characters). From all these words we consider only those whose letters are in lexigraphical order (each character is smaller than the next character).

The coding system works like this:

The words are arranged in the increasing order of their length.

The words with the same length are arranged in lexicographical order (the order from the dictionary).

We codify these words by their numbering, starting with a, as follows:
a 000000- 1
b 000000- 2
...
z 000000- 26
ab 00000- 27
...
az 00000- 51
bc 00000- 52
...
vwxzy00 - 83681
...

Task

Specify for a given word if it can be codified according to this coding system. For the affirmative case specify its code.

Input format

The input file COD.IN contains a word on each line.

Output format:

The output file COD.OUT will contain the code of the given word, or 0 if the word can not be codified.

Constraints

A word is maximum 10 letters length

The English alphabet has 26 characters.

Examples:

COD.IN	COD.OUT
bf	55
COD.IN	COD.OUT
aab	0
COD.IN	COD.OUT
vwxyz	83681

Time limit: 2 seconds/test