Simple Sum

CodeChefRating 2089Open on judge ↗

Given a positive integer n, Chef has asked you to calculate the following sum in the most efficient way: Here gcd(a,b) means greatest common divisor of two integers a and b. Input The first line of input contains an integer T denoting the number of test cases. The description of T test cases follows.The only line describing each test case contains a single integer n, given to you by Chef. Pl

HINT LADDERno hints yet

L1 Observation

L2 Technique

L3 Approach

L4 Pseudo-code

🔒

L5 Full solution

L5 unlocks only if you insist twice

solution.cppC++17

CodeSearch Tutor

Hints, not spoilers — it won’t hand over the full solution unless you insist.

voice by Sarvam AI