Roger has found
Input Specification
The first line will consist of a single integer,
The next line will consist of
Output Specification
Print the number of digits in the binary representation of the product
Constraints
Subtask 1 [10%]
Subtask 2 [90%]
Sample Input
Copy
5
2 2 2 2 2
Sample Output
Copy
6
Explanation of Sample Output
Let
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