D. Valera and Swaps time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output A permutation p of length n is a sequence of distinc

链接：http://codeforces.com/problemset/problem/441/A Valera and Antique Items time limit per test：1 second memory limit per test：256 megabytes input：standard input output：standard output