CF1110C Meaningless Operations
Description
Can the greatest common divisor and bitwise operations have anything in common? It is time to answer this question.
Suppose you are given a positive integer $ a $ . You want to choose some integer $ b $ from $ 1 $ to $ a - 1 $ inclusive in such a way that the [greatest common divisor (GCD)](https://en.wikipedia.org/wiki/Greatest_common_divisor) of integers $ a \oplus b $ and $ a \> \& \> b $ is as large as possible. In other words, you'd like to compute the following function:
$ $$$f(a) = \max_{0 < b < a}{gcd(a \oplus b, a \> \& \> b)}. $ $
Here $ \\oplus $ denotes the bitwise XOR operation, and $ \\& $ denotes the bitwise AND operation.
The greatest common divisor of two integers $ x $ and $ y $ is the largest integer $ g $ such that both $ x $ and $ y $ are divided by $ g $ without remainder.
You are given $ q $ integers $ a\_1, a\_2, \\ldots, a\_q $ . For each of these integers compute the largest possible value of the greatest common divisor (when $ b$$$ is chosen optimally).
Input Format
The first line contains an integer $ q $ ( $ 1 \le q \le 10^3 $ ) — the number of integers you need to compute the answer for.
After that $ q $ integers are given, one per line: $ a_1, a_2, \ldots, a_q $ ( $ 2 \le a_i \le 2^{25} - 1 $ ) — the integers you need to compute the answer for.
Output Format
For each integer, print the answer in the same order as the integers are given in input.
Explanation/Hint
For the first integer the optimal choice is $ b = 1 $ , then $ a \oplus b = 3 $ , $ a \> \& \> b = 0 $ , and the greatest common divisor of $ 3 $ and $ 0 $ is $ 3 $ .
For the second integer one optimal choice is $ b = 2 $ , then $ a \oplus b = 1 $ , $ a \> \& \> b = 2 $ , and the greatest common divisor of $ 1 $ and $ 2 $ is $ 1 $ .
For the third integer the optimal choice is $ b = 2 $ , then $ a \oplus b = 7 $ , $ a \> \& \> b = 0 $ , and the greatest common divisor of $ 7 $ and $ 0 $ is $ 7 $ .