Sum of Four Values

You are given an array of n integers, and your task is to find four values (at distinct positions) whose sum is x. Input The first input line has two integers n and x: the array size and the target sum. The second line has n integers a_1,a_2,\dots,a_n: the array values. Output Print four integers: the positions of the values. If there are several solutions, you may print any of them. If there