黑码

Kyle is a student of Programming Monkey Elementary School. Just as others, he is deeply concerned with his grades.Last month, the school held an examination including five subjects, without any doubt,

As we know, Rikka is poor at math. Yuta is worrying about this situation, so he gives Rikka some math tasks to practice. There is one of them:  There are nn children and mm kinds of candies. Th