5

Excel Column Number

Difficulty: EASY
Contributed By
Anish De |Level 1
Avg. time to solve
23 min

Problem Statement

You have been given a column title as appears in an Excel sheet, return its corresponding column number.

For example:
A -> 1
B -> 2
C -> 3
...
Z -> 26
AA -> 27
AB -> 28 
...
Input Format
The only line of input contains a string S i.e. column title 
Constraints:
1 <= |S| <= 10
Input contains only uppercase English Alphabet letters

Time Limit : 1 sec
Output Format
The only line of output will print the column number corresponding to given column title 
Sample Input 1
AB
Sample Output 1
28
Sample Input 2
ZZZ
Sample Output 2
18278
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