Module: Loop statement with condition - while


Problem

13 /20


binary logarithm

Problem

Given a natural number N print the smallest integer k such that \(2^k >= N.\) Raising to a power cannot be used!

Input 
Enter a natural number N.

Imprint 
Print the answer to the problem.
 

 

Examples
# Input Output
1 7 3

time 1000 ms
memory 256 Mb
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