摘要:
Problem DescriptionTeacher Mai has n numbers a1,a2,⋯,anand n−1 operators("+", "-" or "*")op1,op2,⋯,opn−1, which are arranged in the fo... 阅读全文
摘要:
Problem DescriptionFar away from our world, there is a banana forest. And many lovely monkeys live there. One day, SDH(Song Da Hou), w... 阅读全文