u012870383的专栏

An antiarithmetic permutation A permutation of n+1 is a bijective function of the initial n+1 natural numbers: 0, 1, ... n. A permutationp is called antiarithmetic if there is no subsequence of it fo

The Closest Pair Problem Input: standard input Output: standard output Time Limit: 8 seconds Memory Limit: 32 MB   Given a set of points in a two dimensional space, you will have to find the