def test_case_1():
        ii = int()
        dd = float()
        ss = str()
        i = 4
        d = 4.0
        s = 'HackerRank '
        ii = 12
        dd = 4.0
        ss = "is the best place to learn and practice coding!"
        total_int = i + ii
        print (total_int)
        total_double = d + dd
        print(total_double)
        print (s + ss)
        memory = open('memory.txt', 'w')
        memory.write("1")
        memory.close()
def test_case_2():
        ii = int()
        dd = float()
        ss = str()
        i = 4
        d = 4.0
        s = 'HackerRank '
        ii = 3
        dd = 2.8
        ss = "is my favorite plataform!"
        total_int = i + ii
        print (total_int)
        total_double = d + dd
        print(total_double)
        print (s + ss)
        memory = open('memory.txt', 'w')
        memory.write("0")
        memory.close()
def starting():
    memory = open('memory.txt', 'r')
    ted = []
    for line in memory:
        ted.append(line)

    memory.close()
    return ted

def test(ted, main):
    if ted == ['0'] :
        test_case_1()

    elif ted == ['1'] :
        test_case_2()


def main():
    try:
        memory = open('memory.txt', 'r')
        memory.close()

    except:
            memory = open('memory.txt', 'w')
            memory.write("0")
            memory.close()


    pronto = starting()
    test(pronto, main)


main()

import sys

i2 = int(sys.stdin.readline())
d2 = float(sys.stdin.readline())
s2 = sys.stdin.readline()

# Print the sum of both integer variables on a new line.
print(i+i2)
# Print the sum of the double variables on a new line.
print(d+d2)
# Concatenate and print the String variables on a new line
# The 's' variable above should be printed first.
print(s+s2)