Competitions

# From base k to base 10

The number n is given in the base k system. Convert number n into decimal system.

#### Input

Two non-negative integers k (2k10) and n.

#### Output

Print one number n in the decimal system. It is guaranteed that n is no more than 109 in decimal notation.

Time limit 1 second
Memory limit 128 MiB
Input example #1
2
1

Output example #1
1

Input example #2
6
53414

Output example #2
7282