2020牛客暑期多校训练营(第三场)------ Classical String Problem
题目描述:输入描述:输出描述:示例输入:nowcoder6A1M4A6M-3M1A1输出:now备注:Initially,Sis‘nowcoder’,sixoperationsfollow.•The1-stoperationisaskingwhatthe1-stletteris.Theansweris'n'.•The2-ndoperationistomovetheleftmost4letterst