暑假集训系列题解（十）
暑假集训系列题解（十）题目1题目链接Multiple Sequences题目描述Given are integers N and M. How many sequences A of N integers satisfy the following co...
暑假集训系列题解（十）题目1题目链接Multiple Sequences题目描述Given are integers N and M. How many sequences A of N integers satisfy the following co...