DCP-553: Perfect Numbers Back to All Problems

Medium Beginners Problems > Implementation

We know, a **perfect square** is a number that can be expressed as the product of two equal integers, a **perfect cube** is a number that can be expressed as the product of three equal integers and a **perfect quartic** is a number that can be expressed as the product of four equal integers. A **perfect number** is the number which is perfect square, perfect cube and perfect quartic. You are given a range, find how many perfect numbers lies in the given range. Input: ------ Input starts with an integer T, denoting the number of test cases. Each test case contains **two** integers L, R denoting a range. Constraints 1 &le; T &le; 100000 1 &le; L &le; R &le; 10<sup>18</sup> Output: ------- For each test case, print required answer. Sample Input ------------ 3 1 10 1 100 2 1000 Sample Output ------------- 1 1 0

Problem Limits

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