You are given a string representing a column in a spreadsheet program. A typical spreadsheet program names the columns A-Z, then AA-AZ, then BA-BZ and so on. Return an integer representing the string argument's column number.

Requirements

• Must return an integer

Example #1

solve("M")
> 13

Example #2

solve("AA")
> 27

Example #3

solve("EW")
> 153