題目鏈接： C. Mashmokh and Reverse Operation time limit per test 4 seconds memory limit per test 512 megabytes input standard input output standard output Mashmokh's boss, Bimokh, didn't like Mashmokh. So he fired him. Mashmokh decided to go
題目鏈接： B. Rebus time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output You are given a rebus of form?? + ? - ? + ? = n, consisting of only question marks, separated by arithmetic
題目連接：http://codeforces.com/contest/734/problem/E E. Anton and Tree time limit per test 3 seconds memory limit per test 256 megabytes input standard input output standard output Anton is growing a tree in his garden. In case you forgot, the tree
題目鏈接： C. Nearest vectors time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output You are given the set of vectors on the plane, each of them starting at the origin. Your task is to find a pa
