# Example input() statement
s = input('Please enter a string: ')

# Print out a friendly greeting in response
print('Hello, {}!'.format(s))

# Example input() statement
n = int(input('Please enter an integer: '))

# Place your print statement here
print('Two times {} is {}.'.format(n,2*n))

from math import pi

# Example input() statement
n = int(input('Please enter an integer: '))

# Replace this with your own print statement
print('{:.{}f}'.format(pi,n))
