Introduction - If you have any usage issues, please Google them yourself
Topic 1: There is a saying called " three days of fits and starts. Someone " fits and starts network from January 1,1990,and asked in a" fishing " or" drying nets? Topic 2: 1, 2, 3, 4 numbers can be composed of a number of three-digit different from each other and no duplication of digital? Are how many? Topic 3: Enter two positive integers m and n, find the greatest common divisor and least common multiple.