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1549.   u Calculate e
Time Limit: 1.0 Seconds   Memory Limit: 65536K
Total Runs: 3262   Accepted Runs: 1446



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.


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.


Example

Output

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


Source: Greater New York 2000
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