给定两个自然数 $A$ 和 $B$。求一个自然数 $N$，使得 $A + N$ 和 $B + N$ 的最小公倍数 $\text{LCM}(A + N, B + N)$ 最小。
输入格式
输入唯一的一行，包含两个自然数 $A$ 和 $B$。它们均不超过 $10^9$。
输出格式
输出使得 $\text{LCM}(A + N, B + N)$ 最小的自然数 $N$。如果有多个 $N$ 都能取得最小值，输出其中最小的那个。
样例
输入样例 1
4 10
输出样例 1
2
QOJ.ac
QOJ
Límite de tiempo: 0.1 s
Límite de memoria: 256 MB
Puntuación total: 100
#15574. LCM
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