#P289. 练47.1 交作业
练47.1 交作业
Description
A group has students. Teacher Fox wants to collect their homework. He tells the first student: "Hand in your homework!" The first student tells the second student: "Hand in your homework!" and so on. After all students have passed the message, student hands the homework to student , student to student , and so on until it reaches Teacher Fox. How many homework assignments does Teacher Fox receive?
Input Format
None
Output Format
A single line containing natural numbers from to , with each number taking up characters.
Sample
None7
Related
In following homework: