P15499 [HackerRank] Utopian tree
普及-
题目描述

The Utopian Tree goes through 2 cycles of growth every year. Each spring, it doubles in height. Each summer, its height increases by 1 meter.

A Utopian Tree sapling with a height of 1 meter is planted at the onset of spring. How tall will the tree be after $n$ growth cycles?

For example, if the number of growth cycles is $n=5$, the calculations are as follows:

Period Height
0 1
1 2
2 3
3 6
4 7
5 14

Function Description

Complete the utopianTree function in the editor below.

utopianTree has the following parameter(s):

int n: the number of growth cycles to simulate

Returns

int: the height of the tree after the given number of cycles

Input Format

The first line contains an integer, $\boldsymbol{\boldsymbol{t}}$, the number of test cases.

$\boldsymbol{\boldsymbol{t}}$ subsequent lines each contain an integer, $n$, the number of cycles for that test case.

Constraints

$1\leq t\leq10$

$0\leq n\leq60$

Sample Input
3
0
1
4

Sample Output
1
2
7

Explanation

There are 3 test cases.

In the first case ($n=0$), the initial height ($H=1$) of the tree remains unchanged.

In the second case ($n=1$), the tree doubles in height and is $2$ meters tall after the spring cycle.

In the third case ($n=4$), the tree doubles its height in spring ($n=1$, $H=2$), then grows a meter in summer ($n=2$, $H=3$), then doubles after the next spring ($n=3$, $H=6$), and grows another meter after summer ($n=4$, $H=7$). Thus, at the end of 4 cycles, its height is $7$ meters.

输入格式

见题面

输出格式

见题面

样例输入
3 0 1 4
样例输出
1 2 7