公交车 - Problema

#12589. 公交车

Estadísticas

AI Translation — This statement was translated using AI and may contain inaccuracies. Please refer to the original statement if in doubt.

一辆载有 $n$ 名乘客的公交车在公交站打开了车门。恰好一半的乘客外加半个乘客下车了。在下一站，同样地，一半的乘客外加半个乘客下车。这个过程总共持续了 $k$ 站。已知公交车在离开最后一站时是空的，且在旅途中没有人受伤，请确定公交车上最初的乘客人数 $n$。

输入格式

输入的第一行包含测试用例的数量 $T$。接下来是各测试用例的描述：每个测试用例仅包含一行，即停靠站的数量 $k$，其中 $1 \leqslant k \leqslant 30$。

输出格式

对于每个测试用例，输出一行，包含一个整数，即公交车上最初的乘客人数。

样例

输入 1

2
1
3

输出 1

1
7

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