# DCP-330: Power Function Back to All Problems

Easy Beginners Problems > Ad-hoc

Given **x** , print the left-most decimal digit of **f(x)** with sign. if x is a odd number then f(x) = (-1) * ( 2 ^ x ) , Otherwise f(x) = 2 ^ x . **note :** **2 ^ x** means, **xth** power of **2**. Input: ------ Input starts with an integer **T (1<=1000)**, denoting the number of test cases. Each case contains an integer **x (1 ≤ x ≤ 60)** . Output: ------- For each case of input, output the left-most decimal digit of **f(x)**. Sample Input ------------ 3 1 2 10 Sample Output ------------- -2 +4 +1

### Problem Limits

 Language Time Limit (seconds) C 1.00 C++ 1.00 C++14 1.00 C# 1.00 Go 1.00 Java 1.00 JavaScript 1.00 Objective-C 1.00 Perl 1.00 PHP 1.00 Python 1.00 Python3 1.00 Ruby 1.00 VB.Net 1.00

# 237/508

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