1078 - u Calculate e

Time limit : 1 sMemory limit : 32 mb
Submitted : 4122Accepted : 1671

Problem Description

Background

A simple mathematical formula for e is

"""

where n is allowed to go to infinity. This can actually yield very accurate approximations of e using relatively small values of n.

Input

 

Output


Output the approximations of e generated by the above formula for the values of n from 0 to 9. The beginning of your output should appear similar to that shown below.


Sample Input

 

Sample Output

n e
- -----------
0 1
1 2
2 2.5
3 2.666666667
4 2.708333333

Hint

Source