Problem2111--Calculates the distance

2111: Calculates the distance

Time Limit: 1 Sec  Memory Limit: 128 MB
Submit: 202  Solved: 42
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Description

An object falls freely from an altitude of 1000 meters, and the gravitational acceleration is 10 meters/(second*second).This problem requires printing the drop distance in first n seconds. h=(1/2)gt^2

Input

n second(s),n is a positive integer.

Output

The drop distance in first n second(s)

Sample Input Copy

1s

Sample Output Copy

5m

Source/Category

149