Problem link http://codeforces.net/problemset/problem/359/D

Here is my solution for the problem http://codeforces.net/contest/359/submission/27581236 I first created lefty[i] and righty[i] which contains the left and right index of the farthest number such that all numbers between farthest number and number at index i are divisible by a[i] . I created it using sparse table . My solution is failing at testcase 25 can someone please help me to debug it.