i = 4
d = 4.0
s = 'HackerRank '

# Declare second integer, double, and String variables.
m = int(input())

n = float(input())

o = input()
# Read and save an integer, double, and String to your variables.

sumi = i+m

sumd = d+n

conc = s+o
# Print the sum of both integer variables on a new line.
print(sumi)
# Print the sum of the double variables on a new line.
print(sumd)
print(conc)
# Concatenate and print the String variables on a new line
# The 's' variable above should be printed first.
