What are the constraints over the value of p[i]?And also tell that in the input q[1],q[2] is serially given or its random shuffle like q[2],q[1],q[3] is given? Somebody help,i have already got 3 WA.
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q[4],q[2],q[1],q[3] IS a random
shuffle of q.
Source : http://discuss.codechef.com/questions/55010/clarification-in-seaperm2