Binary to decimal

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Level EASY

Given a binary number as an integer N, convert it into decimal and print.

Input format :
An integer N in the Binary Format
Output format :
Corresponding Decimal number (as integer)
Constraints :
0 <= N <= 10^9
Sample Input 1 :
1100
Sample Output 1 :
12
Sample Input 2 :
111
Sample Output 2 :

7

















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