Fresh Signal Relay Window

A relay monitor receives a sequence of positive signal IDs. A contiguous relay window is considered fresh only when every signal ID inside that window is unique. The energy of a fresh window is the sum of all signal IDs in that window. Windows must remain contiguous in the original order; you cannot skip signals inside a chosen window. Determine the maximum energy among all possible fresh relay windows. Input Format: You are given an integer array signals. Output Format: Return the largest sum of any contiguous subarray whose values are all distinct.