Deutsche BankOA #2
Give Minimum Sum
估计中等评测数据准备中，可先阅读题面
考点（AI 标注）位运算
Give the minimum sum of (x+y) such that A and B are given and (A+x) should be multiple of (B+y).
Example 1
Input:
A = 8
B = 16
Output:
0
Explanation:
Educated guess -
Since A is already a multiple of B, no additional sum is needed. Therefore, the answer is 0.
Example 2
Input:
A = 7
B = 37
Output:
4
Explanation:
Educated guess -
The minimum sum of (x+y) to make (A+x) a multiple of (B+y) is 4. This can be achieved by setting x = 3 and y = 1, making (A+x) = 10 and (B+y) = 38, where 10 is a multiple of 38.