Array Sum

CodeChefOpen on judge ↗

Given an array, we define its value to be the value obtained by following these instructions: - Write down all pairs of numbers from this array. - Compute the product of each pair. - Find the sum of all the products. For example, for a given array, for a given array [7,2,-1,2] Pairs (7, 2), (7, -1), (7, 2), (2, -1), (2, 2), (-1, 2) Products of the pairs 14, -7, 14, -2, 4, -2 Sum of Products

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