Arjun is a student perusing CSE in one of the top colleges in India.
Its the first day of his math class. Though he is cool in math he is homesick.
His teacher gives him a question to keep his mind occupied.
Can you help Arjun solve it but there is one problem Only when his teacher thinks he's
deviated
from homesickness he stops giving input until then you have to give Arjun the correct
answer.
Happy Coding.
[Hint:EOF(end of file concept is important along with infinite loop)]