俾定一個整數 $n > 1$ 同埋以下方程：
$$\frac{1}{n} = \frac{1}{a} + \frac{1}{b}$$
請搵出兩個唔同嘅正整數 $a, b$，令佢哋同時滿足上面條方程，而且佢哋嘅總和 $a + b$ 細到極致。
由細到大輸出最佳嘅 $a$ 同 $b$。
4
6 12
107
108 11556
999999
1998000 2002000
1000000
1800000 2250000
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