摘要：
Manao is trying to open a rather challenging lock. The lock has n buttons on it and to open it, you should press the buttons in a certain order to ope 阅读全文
摘要：
You are a lover of bacteria. You want to raise some bacteria in a box. Initially, the box is empty. Each morning, you can put any number of bacteria i 阅读全文
摘要：
输入N求N的阶乘的准确值。 Input Output Input示例 Output示例 阅读全文
摘要：
输入N求N的阶乘的10进制表示的长度。例如6! = 720，长度为3。 Input Output Input示例 Output示例 阅读全文
摘要：
输入N求N的阶乘的10进制表示的长度。例如6! = 720，长度为3。 Input Output Input示例 Output示例 阅读全文