Input: standard input
Output: standard output
A particle has initial velocity and constant
acceleration. If its velocity after certain time is v then what will its
displacement be in twice of that time?
Input
The
input will contain two integers in each line. Each line makes one set of input.
These two integers denote the value of v (-100 <= v <= 100) and
t(0<=t<= 200) ( t means at the time the particle gains that velocity)
Output
For each line of input print a single integer
in one line denoting the displacement in double of that time.
Sample
Input
|
Input
|
Output
|
|
0 0
5
12
|
0
120
|
Tóm
tắt đề
Cho vận tốc v và thời gian
t. Tìm quãng đường s sau thời gian 2 * t
