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