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50369 - Base Conversion

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Time limit 2000/4000/4000/4000 ms. Memory limit 65000/65000/65000/65000 Kb.
Prepared by Ibrahim Mesecan.

Convert a from a base into another base

Question:
Given a string that represents a base X number, convert it to equivalent string in base Y. For example: "FE" in base 16 (Hexadecimal) is "254" in base 10 (Decimal) and "11111110" in base 2 (binary).

Input specification
You are first given two integers base1, and base2 which is 2 ≤ (base1, base2) ≤ 36. Then in the following line, you are given a string which is composed of digits (0..9) and/or upper case English letters (A..Z), and the decimal number is in the limit of 263-1.
Note: Letter 'A' represents 10, etc.

Output specification
Show one string, the converted number.

 Sample Input I     Sample Output I   
 16 26
 FDC8
 3I2K


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