这个一道ACM竞赛中的复杂模拟程序。按照国际象棋的规则，程序从check_in中读入双方落子的步骤 通过程序模拟该盘棋过程，并最后判断输赢。将结果仿真check_out中。-This together with the complexity of ACM race simulation program. In accordance with international chess rules, procedures check_in read from both sides落子steps i