#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Created on Mon Jan 27 09:42:42 2020

@author: aims
"""

"""
1. Declare 3 variables: one of type int, one of type double, and one of type 
String. 

2. Read 3 lines of input from stdin (according to the sequence given in the 
Input Format section below) and initialize your 3 variables.

3.Use the plus operator to perform the following operations:
    -Print the sum of i plus your int variable on a new line.
    - Print the sum ofd plus your double variable to a scale of one decimal 
    place on a new line.
    - Concatenate s with the string you read as input and print the result on 
    a new line. . 

"""

i = 4
d = 4.0
s = 'HackerRank '
# Declare second integer, double, and String variables.
a = int(input())
b = float(input())
c = str(input())
# Read and save an integer, double, and String to your variables.

# Print the sum of both integer variables on a new line.
print(i+a)
# Print the sum of the double variables on a new line.
print(b+d)
# Concatenate and print the String variables on a new line
# The 's' variable above should be printed first.
print(s+c)A