Problem:
 ﻿Score: 100 points    Problem Statement  In 2020 , AtCoder Inc. with an annual sales of more than one billion yen (the currency of Japan) has started a business in programming education. One day, there was an exam where a one-year-old child must write a program that prints Hello World , and a two-year-old child must write a program that receives integers A, B and prints A+B . Takahashi, who is taking this exam, suddenly forgets his age. He decides to write a program that first receives his age N ( 1 or 2 ) as input, then prints Hello World if N=1 , and additionally receives integers A, B and prints A+B if N=2 . Write this program for him.      Constraints   N is 1 or 2 .  A is an integer between 1 and 9 (inclusive).  B is an integer between 1 and 9 (inclusive).         Input  Input is given from Standard Input in one of the following formats:  1  2 A  B       Output  If N=1 , print Hello World ; if N=2 , print A+B .        Sample Input 1 1      Sample Output 1 Hello World  As N=1 , Takahashi is one year old. Thus, we should print Hello World .       Sample Input 2 2
3
5      Sample Output 2 8  As N=2 , Takahashi is two years old. Thus, we should print A+B , which is 8 since A=3 and B=5 .

Solution (Python):
def main():
    import sys
    input = sys.stdin.readline
    sys.setrecursionlimit(10**7)
    from collections import Counter, deque
    
    from itertools import combinations, permutations, accumulate, groupby
    
    from bisect import bisect_left,bisect_right
    import heapq
    from math import floor, ceil
    

    
    

    n = int(input())
    if n==1:
        print('Hello World')
        exit()
    else:
        a = int(input())
        b = int(input())
        print(a+b)

if __name__ == '__main__':
    main()

Solution (Python):
n=int(input())
if n==2:
    a=[int(input()) for i in range(2)]
if n==1:
    print("Hello World")
else:
    print(a[0]+a[1])

Solution (Python):
n = int(input())
if n == 1:
    print('Hello World')
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
N = int(input())
if N==1:
    print('Hello World')
else:
    A=int(input())
    B=int(input())
    print(A+B)

Solution (Python):
N = int(input())
if N==1:
    print("Hello World")
elif N==2:
    A = int(input())
    B = int(input())
    print(A+B)

Solution (Python):
import sys

*command, = map(int, sys.stdin.read().split())
n = command[0]

def main():
    if n == 1:
        print('Hello World')
    elif n == 2:
        a = command[1]; b = command[2]
        print(a + b)

if __name__ ==  '__main__':
    main()

Solution (Python):
import sys
import copy
import math
import bisect
import pprint
import bisect
from functools import reduce
from copy import deepcopy
from collections import deque

if __name__ == '__main__':
    a = int(input())

    if a ==1:
        print("Hello World")
    else:
        b =int(input())
        c = int(input())
        print(b+c)

Solution (Python):
n=int(input())
print("Hello World" if n==1 else int(input())+int(input()))

Solution (Python):
if int(input()) == 1:
  print('Hello World')
else:
  ans = int(input())
  ans += int(input())
  print(ans)

Solution (Python):
N = int(input())
if N == 1:
    print('Hello World')
else:
    A = int(input())
    B = int(input())
    print(A+B)

Solution (Python):
if int(input()) == 1:
    print("Hello World")
else:
    a = int(input())
    b = int(input())
    print(a + b)

Solution (Python):
if int(input()) == 1:
  print('Hello World')
else:
  print(sum([int(input()) for i in range(2)]))

Solution (Python):
N = int(input())

if N == 1:
	answer = "Hello World"
	print(answer)
elif N == 2:
	A = int(input())
	B = int(input())
	answer = A + B
	print(answer)

Solution (Python):
n = int(input())
if n == 1:
    print('Hello World')
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
n = int(input())
if n == 1:
    print('Hello World')
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):

N = int(input())
if N==1:
    print('Hello World')
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
n = int(input())

if n == 1:
  print('Hello World')
else:
  a = int(input())
  b = int(input())
  print(a+b)

Solution (Python):
n=int(input())
if n==1:print('Hello World')
else:
  a=int(input())
  b=int(input())
  print(a+b)

Solution (Python):


N = int(input())
if N == 1:
    print('Hello World')
elif N == 2:
    A = int(input())
    B = int(input())
    print(A + B)

Solution (Python):
N = int(input())


if N ==1:
  print("Hello World")
  
  

else:
  A = int(input())
  B = int(input())
  print(A+B)

Solution (Python):
print("Hello World"if input()=="1"else int(input())+int(input()))

Solution (Python):
N=int(input())
if N==1:
  print("Hello World")
else:
  A=int(input())
  B=int(input())
  print(A+B)

Solution (Python):

def inputlist(): return [int(j) for j in input().split()]
from collections import Counter



N = int(input())
if N == 1:
    print("Hello World")
if N == 2:
    A = int(input())
    B = int(input())
    print(A+B)

Solution (Python):
x=int(input())
if (x==1):
  print("Hello World")
else:
  a=int(input())
  b=int(input())
  print(a+b)

Solution (Python):
import sys
from bisect import *
from heapq import *
from collections import *
from itertools import *
from functools import *
from math import *
from fractions import *

sys.setrecursionlimit(100000000)
input = lambda: sys.stdin.readline().rstrip()


def main():
    N = int(input())
    if N == 1:
        print('Hello World')
    else:
        print(int(input()) + int(input()))


main()

Solution (Python):
if int(input()) == 1:
    print("Hello World")
else:
    A = int(input())
    B = int(input())
    print(A+B)

Solution (Python):
N=int(input())
if N==1:
    print('Hello World')
else:
    A=int(input())
    B=int(input())
    print(A+B)

Solution (Python):
N = input()
if N == '1':
    print('Hello World')
else:
    A = int(input())
    B = int(input())
    print(A+B)

Solution (Python):
N = int(input())
if N==1:
    print('Hello World')
elif N==2:
    A = int(input())
    B = int(input())
    print(A+B)

Solution (Python):
n = int(input())
if n == 1:
  print('Hello World')
else:
  a = int(input())
  b = int(input())
  print(a + b)

Solution (Python):
n = int(input())
if n == 1:
  print('Hello World')
else:
  a = int(input())
  b = int(input())
  print(a+b)

Solution (Python):
N = int(input())
if N == 1:
  print("Hello World")
else:
  print(int(input()) + int(input()))

Solution (Python):
N=int(input())
if N==1:
  print("Hello World")
else:
  A=int(input())
  B=int(input())
  print(A+B)

Solution (Python):
n = int(input())
if n == 1:
    print("Hello World")
elif n == 2:
    a = int(input())
    b = int(input())
    print(a + b)

Solution (Python):
n = int(input())
if n == 1:
  print("Hello World")
else:
  a = int(input())
  b = int(input())
  print(a+b)

Solution (Python):
a = int(input())
num = 0
if a == 1:
  print("Hello World")
else:
  num = [int(input()) for i in range(2)]
  print(num[0]+num[1])

Solution (Python):

N = int(input().strip())

if N == 1:
    print('Hello World')
else:
    A = int(input().strip())
    B = int(input().strip())
    print(A + B)

Solution (Python):
n = int(input())
if n==1:
    print('Hello World')
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
import sys
import os

MOD = 10 ** 9 + 7


def main():
    if os.getenv("LOCAL"):
        sys.stdin = open("input.txt", "r")

    N = int(sys.stdin.buffer.readline().rstrip())
    print('Hello World') if N == 1 else print(sum(int(sys.stdin.buffer.readline().rstrip()) for _ in range(2)))

if __name__ == '__main__':
    main()

Solution (Python):
N = int(input())
if N == 1:
	print("Hello World")
else:
	A = int(input())
	B = int(input())
	print(A + B)

Solution (Python):
N=int(input())
if N==1:
  print("Hello World")
else:
  A=int(input())
  B=int(input())
  print(A+B)

Solution (Python):
n=input()
if n=="1":
  print("Hello World")
else:
  a=int(input())
  b=int(input())
  print(a+b)

Solution (Python):
N=int(input())
if N==1:
    print("Hello World")
else:
    a=int(input())
    b=int(input())
    print(a+b)

Solution (Python):
N = int(input())
if N == 1:
    print("Hello World")
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
n = int(input())

if n == 1:
    print("Hello World")
else:
    a = int(input())
    b = int(input())
    print(a + b)

Solution (Python):

n = int(input())
if n == 1:
    print("Hello World")
    exit()
else:
    a = int(input())
    b = int(input())
    print(a + b)

Solution (Python):
n = int(input())
if n == 1:
    print("Hello World")
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
N=int(input())
if N==1:
    print("Hello World")
else:
    A=int(input())
    B=int(input())
    print(A+B)

Solution (Python):
N = int(input())
if N == 1:
    print("Hello World")
else:
    A = int(input())
    B = int(input())
    print(A + B)

Solution (Python):
n=int(input())
if n==1:
  print("Hello World")
else:
  a=int(input())
  b=int(input())
  print(a+b)

Solution (Python):
n = int(input())
if n == 1:
  print("Hello World")
else:
  a = int(input())
  b = int(input())
  print(a + b)

Solution (Python):
N = int(input())

if (N == 1):
    print("Hello World")
else:
    A = int(input())
    B = int(input())
    print(A+B)

Solution (Python):
n = int(input())
if n == 1:
    print("Hello World")
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
n=int(input())
if n==1:
    print("Hello World")
else:
    a=int(input())
    b=int(input())
    print(a+b)

Solution (Python):
if input()=="1":
  print("Hello World")
else:
  print(int(input()) + int(input()))

Solution (Python):
N = int(input())
if N == 1:
    print("Hello World")
else:
    A = int(input())
    B = int(input())
    print(A + B)

Solution (Python):
n = int(input())

if n == 1:
    print("Hello World")
else:
    a = int(input())
    b = int(input())
    print(a + b)

Solution (Python):
N = int(input())

if N == 1:
    print('Hello World')
else:
    A = int(input())
    B = int(input())
    print(A+B)

Solution (Python):
if int(input()) == 1:
    print('Hello World')
else:
    a, b = int(input()), int(input())
    print(a + b)

Solution (Python):

n = int(input())
if n == 1 :
    print('Hello World')
else :
    print(sum([int(input()) for i in range(2)]))

Solution (Python):

n = int(input())
if n == 1 :
    print('Hello World')
else :
    a = int(input())
    b = int(input())
    print(a + b)

Solution (Python):

n = int(input())
if n == 1:
    print("Hello World")
    exit()
else:
    a = int(input())
    b = int(input())
    print(a + b)

Solution (Python):
n = int(input())
if n == 1:
    print("Hello World")
else:
    a = int(input())
    b = int(input())
    print(a + b)

Solution (Python):
n = int(input())
if n == 1:
	print("Hello World")
else:
	a = int(input())
	b = int(input())
	print(a+b)

Solution (Python):
n=int(input())
if n==1:
    print('Hello World')
else:
    a=int(input())
    b=int(input())
    print(a+b)

Solution (Python):
def main():
    n = int(input())
    if n == 2:
        a = int(input())
        b = int(input())
        ans = a + b
    else:
        ans = "Hello World"

    print(ans)


if __name__ == "__main__":
    main()

Solution (Python):
n = int(input())
if n == 1:
  print("Hello World")
elif n == 2:
  print(int(input()) + int(input()))

Solution (Python):
if int(input()) == 1:
    print("Hello World")
else:
    A = int(input())
    B = int(input())
    print(A + B)

Solution (Python):
a = int(input())
if a == 1:
  print('Hello World')
else:
  b = int(input())
  c = int(input())
  print(b + c)

Solution (Python):
print('Hello World' if int(input())==1 else int(input())+int(input()))

Solution (Python):
N = int(input())

if N ==1:
  print('Hello World')
else:
  A = int(input())
  B = int(input())
  print(A+B)

Solution (Python):

n=int(input())
if n==1:
    print("Hello World")
else:
    a=int(input())
    b=int(input())
    print(a+b)

Solution (Python):
n = int(input())
if n == 1:
    print('Hello World')
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
if input() == '1':
  print('Hello World')
else:
  print(sum([int(input()) for i in range(2)]))

Solution (Python):
n = int(input())
if n == 1:
    print('Hello World')

else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
n=int(input())
if n==1:print("Hello World")
else:
  a=int(input())
  b=int(input())
  print(a+b)

Solution (Python):
i = int(input())
if i == 1:
  print('Hello World')
  exit()
print(int(input()) + int(input()))

Solution (Python):
print('Hello World'if input()=='1'else int(input())+int(input()))

Solution (Python):
n = int(input())
if n == 1:
    print("Hello World")
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
N = int(input())
if N == 1:
  print('Hello World')
else:
    A = int(input())
    B = int(input())
    print(A+B)

Solution (Python):
x=int(input())
if x==1:
	print('Hello World')
else:
	y=int(input())
	z=int(input())
	print(y+z)

Solution (Python):
n = int(input())
if n==1:
        print("Hello World")
else:
        print(int(input())+int(input()))

Solution (Python):
n = int(input())
if n==1:
    print('Hello World')
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):

n=int(input())
if n==1:
    print("Hello World")
    exit()

a=int(input())
b=int(input())
print(a+b)

Solution (Python):
if int(input())==1:print("Hello World")
else:
  print(int(input())+int(input()))

Solution (Python):
n = int(input())
if n == 1:
    print('Hello World')
else:
    a = int(input())
    b = int(input())
    print(a + b)

Solution (Python):
N=int(input())
if N ==1:
    print('Hello World')
else:
    A= int(input())
    B= int(input())
    print(A+B)

Solution (Python):
n = int(input())
if n ==1:
  print('Hello World')
else:
  a = int(input())
  b = int(input())
  print(a+b)

Solution (Python):



def main():
  n = input().strip()
  if n == '1':
    print('Hello World')
  else:
    a = int(input())
    b = int(input())
    print(a+b)

if __name__=='__main__':
  main()

Solution (Python):









import sys



ipti = sys.stdin.readline
MOD = 10 ** 9 + 7
INF = float('INF')
sys.setrecursionlimit(10 ** 5)

def main():
    n = int(input())

    if n == 1:
        print("Hello World")
    else:
        a = int(input())
        b = int(input())
        print(a+b)

if __name__ == '__main__':
    main()

Solution (Python):
n = int(input())

if n == 1:
    print('Hello World')
elif n == 2:
    a = int(input())
    b = int(input())
    print(a + b)

Solution (Python):
n=int(input())
if n==1:
 print("Hello World")
else:
 a=int(input())
 b=int(input())
 print(a+b)

Solution (Python):
N = int(input())
if N==1:
    print('Hello World')
else:
    AB = [int(input()) for i in range(2)]
    print(sum(AB))

Solution (Python):
n=int(input())
if n==1:
  print("Hello World")
if n==2:
  print(int(input())+int(input()))

Solution (Python):
n=int(input())
if(n==1):
    print("Hello World")
else:
    a=int(input())
    b=int(input())
    print(a+b)

Solution (Python):
n=int(input())
if n==1:
	print('Hello World')
	exit()
else:
	a=int(input())
	b=int(input())
	print(a+b)

Solution (Python):
n = int(input())
if n==1:
    print('Hello World')
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
N=int(input())
if N==1:
  print("Hello World")
else:
  a=int(input())
  b=int(input())
  print(a+b)

Solution (Python):
n=int(input())
if n==1:
    print('Hello World')
else:
    a=int(input())
    b=int(input())
    print(a+b)

Solution (Python):
n=int(input())
if n==1:
  print('Hello World')
else:
  a=int(input())
  b=int(input())
  print(a+b)

Solution (Python):
n = int(input())
if n==1:
    print("Hello World")
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
i=input
a=i()
if a=='1':
  print('Hello World')
else:
  b=int(i())
  c=int(i())
  print(b+c)

Solution (Python):
N = int(input())

if N == 1:
    print("Hello World")
else:
    l = [int(input()) for _  in range(2)]
    print(l[0]+l[1])

Solution (Python):
N = int(input())
if N == 1:
  print("Hello World")
else:
  A = int(input())
  B = int(input())
  print(A + B)

Solution (Python):
N = int(input())
if N == 1:
  print("Hello World")
else:
  A = int(input())
  B = int(input())
  print(A + B)

Solution (Python):
n = int(input())

if n == 1:
    print("Hello World")
    exit()

a, b = [int(input()) for _ in range(2)]

print(a + b)

Solution (Python):
N = int(input())
if N == 1:
  print("Hello World")
else:
  a = int(input())
  b = int(input())
  print(a+b)

Solution (Python):
n = int(input())

if n == 2:
  a = int(input())
  b = int(input())
  print(a+b)
else:
  print('Hello World')

Solution (Python):
n = int(input())
if n==1:
    print('Hello World')
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
n = int(input())

if n == 1:
  print('Hello World')
else:
  a = int(input())
  b = int(input())
  print(a + b)

Solution (Python):
n = int(input())
print('Hello World' if n ==1 else int(input())+int(input()))

Solution (Python):


n = int(input().strip())

if n ==1:
  print("Hello World")
else:
  A,B = [int(input().strip()) for _ in range(2)]
  print(A+B)

Solution (Python):
n=int(input())
if n==1:
  print("Hello World")
else:
  a=int(input())
  b=int(input())
  print(a+b)

Solution (Python):
N = int(input())
 
if N == 1:
  print('Hello World')
else:
  A = int(input())
  B = int(input())
  print(A + B)

Solution (Python):
x = int(input())
if x == 1:
    print("Hello World")
else:
    a = int(input())
    b = int(input())
    print(a + b)

Solution (Python):
n = int(input())
if n == 1:
    print('Hello World')
else:
    a = int(input())
    b = int(input())
    print(a + b)

Solution (Python):
N = int(input())
if N == 1:
  print('Hello World')
else:
  A, B = (int(input()) for i in range(2))
  print(A + B)

Solution (Python):
N = int(input())
if N == 1:
    print('Hello World')
else:
    A = int(input())
    B = int(input())
    print(A+B)

Solution (Python):
n = int(input())

if n == 1:
    print("Hello World")
else:
    print(int(input())+int(input()))

Solution (Python):
n=int(input())
print("Hello World" if n != 2 else int(input())+int(input()))

Solution (Python):
N = int(input())

if N == 1 :
    print("Hello World")
else :
    A = int(input())
    B = int(input())
    print(A+B)

Solution (Python):
N = input()
if N == '1':
    print('Hello World')
else:
    A,B = [int(input()) for _ in range(2)]
    print(A+B)

Solution (Python):
switch = int(input())

if switch == 1:
    print('Hello World')
elif switch == 2:
    a1 = int(input())
    a2 = int(input())
    print(a1+a2)

Solution (Python):
switch = int(input())

if switch == 1:
    print('Hello World')
elif switch == 2:
    a1 = int(input())
    a2 = int(input())
    print(a1+a2)

Solution (Python):
N = int(input())
if N == 1:
    print('Hello World')
else:
    A = int(input())
    B = int(input())
    print(A+B)

Solution (Python):
import sys
 
stdin = sys.stdin
inf = 1 << 60
mod = 1000000007
 
ni = lambda: int(ns())
nin = lambda y: [ni() for _ in range(y)]
na = lambda: list(map(int, stdin.readline().split()))
nan = lambda y: [na() for _ in range(y)]
ns = lambda: stdin.readline().rstrip()
nsn = lambda y: [ns() for _ in range(y)]
ncl = lambda y: [list(ns()) for _ in range(y)]
nas = lambda: stdin.readline().split()

n = ni()
if n == 1:
    print("Hello World")
else:
    a, b = nin(2)
    print(a + b)

Solution (Python):
n=int(input())
if n==1:
  print('Hello World')
else:
  a=int(input())
  b=int(input())
  print(a+b)

Solution (Python):
n = int(input())
if n == 1:
  print("Hello World")
else:
  print(int(input()) + int(input()))

Solution (Python):
n = int(input())
if n == 1:
  print("Hello World")
if n == 2:
  a = int(input())
  b = int(input())
  print(a + b)

Solution (Python):
y=int(input())
if y==1:
    print("Hello World")
else:
    a,b=[int(input()) for _ in range(2)]
    print(a+b)

Solution (Python):
print("Hello World" if int(input()) == 1 else int(input()) + int(input()))

Solution (Python):
N=int(input())
if N==1 :
  print("Hello World")
else :
  A=int(input())
  B=int(input())
  print(A+B)

Solution (Python):
if input()=="1":
  print("Hello World")
else:
  print(int(input())+int(input()))

Solution (Python):
N=int(input())
if N==1:
    print('Hello World')
else:
    A=int(input())
    B=int(input())
    print(A+B)

Solution (Python):

if int(input())==1:
    print('Hello World')
else:
    print(int(input())+int(input()))

Solution (Python):
n = int(input())

if n == 1:
    print("Hello World")
else:
    print(int(input()) + int(input()))

Solution (Python):
N = input()
if (N == '1'):
	print("Hello World")
else:
	A = input()
	B = input()
	print(int(A) + int(B))

Solution (Python):
IN=open(0).read().split()
if len(IN)==1:
  print("Hello World")
else:
  print(int(IN[1])+int(IN[2]))

Solution (Python):
N = int(input())

if N == 1:
    print("Hello World")
else:
    A, B = int(input()), int(input())
    print(A + B)

Solution (Python):
N = int(input())
if N==1:
    print("Hello World")
else:
    A, B = [int(input()) for i in range(2)]
    print(A+B)

Solution (Python):
N=int(input())
if N==1:
	print("Hello World")
elif N==2:
	A=int(input())
	B=int(input())
	print(A+B)

Solution (Python):
N=int(input())
if N==1:
  print('Hello World')
else:
  a=int(input())
  b=int(input())
  print(a+b)

Solution (Python):
n=int(input())
if n==1:
  print("Hello World")
else:
   a=int(input())
   b=int(input())
   print(a+b)

Solution (Python):
import sys
def input(): return sys.stdin.readline().rstrip()

def main():
    N = int(input())
    if N == 1:
        print('Hello World')
    else:
        A = int(input())
        B = int(input())
        print(A + B)

if __name__ == '__main__':
    main()

Solution (Python):
N = int(input())

if N == 1:
  print('Hello World')
else:
  A = int(input())
  B = int(input())
  print(A + B)

Solution (Python):
n = int(input())

if n == 1:
    print("Hello World")
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
n  = int(input())
if n == 1:print("Hello World")
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
n = int(input())
if n == 1:
    print('Hello World')
if n == 2:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
N = int(input())
if N == 1:
    print('Hello World')
else:
    print(int(input()) + int(input()))

Solution (Python):
n = input()
if n == "1":
    print("Hello World")
else:
    x = int(input())
    y = int(input())
    print(x+y)

Solution (Python):
N = input()
if N == 1:
    print "Hello World"
elif N == 2:
    A = input()
    B = input()
    print A + B

Solution (Python):
N=input()
if N==1:
    print "Hello World"
elif N==2:
    A = input()
    B = input()
    print A+B

Solution (Python):
n = int(input())
if n == 1:
    print("Hello World")
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
N = int(input())

if N == 1:
    print('Hello World')
else:
    A = int(input())
    B = int(input())
    print(A+B)

Solution (Python):
n=int(input())
if n==1:print("Hello World")
else :
    a=int(input())
    b=int(input())
    print(a+b)

Solution (Python):
n=int(input())
if n==1:
 print('Hello World')
else:
 a=int(input())
 b=int(input())
 print(a+b)

Solution (Python):
n=int(input())
if n==1:
	print("Hello World")
else:
	print(int(input())+int(input()))

Solution (Python):
n = input()
if n=='1': print('Hello World')
elif n=='2':
  a=int(input())
  b=int(input())
  print(a+b)

Solution (Python):
n = int(input())
if n == 1:
    print('Hello World')
else:
    a = int(input())
    b = int(input())
    print(a + b)

Solution (Python):
N = int(input())

if N == 1:
    print("Hello World")
    exit()

A = int(input())
B = int(input())

print(A+B)

Solution (Python):
N = int(input())
if N == 1:
    print("Hello World")
elif N == 2:
    A=[]
    for i in range(2):
        add = int(input())
        A.append(add)
    print(sum(A))

Solution (Python):
N = int(input())
if(N == 1):
    print('Hello World')
else:
    A = int(input())
    B = int(input())
    print(A+B)

Solution (Python):
N=int(input())
if N==1:
    print('Hello World')
else:
    A=int(input())
    B=int(input())
    print(A+B)

Solution (Python):
n = int(input())
if n == 1:
  print("Hello World")
else:
  print(int(input())+int(input()))

Solution (Python):
N = int(input())
if N == 1:
  print("Hello World")
else:
  a = int(input())
  b = int(input())
  print(a+b)

Solution (Python):
N=int(input())
if N==1:
    print("Hello World")
else:
    a=int(input())
    b=int(input())
    print(a+b)

Solution (Python):
n = int(input())
if n == 1:
    print('Hello World')
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
print('Hello World') if int(input()) == 1 else print(int(input()) + int(input()))

Solution (Python):
n = int(input())
if n == 1:
  print('Hello World')
  exit(0)
else:
  a = int(input())
  b = int(input())
  print(a+b)

Solution (Python):
n = int(input())
if n == 1:
    print("Hello World")
elif n == 2:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
N = int(input())
if N == 1:
  print('Hello World')
else:
  A = int(input())
  B = int(input())
  print(A + B)

Solution (Python):
N = input()
if N == "1" :
    print("Hello World")
else :
    print(int(input()) + int(input()))

Solution (Python):
N=int(input())
if N==2:
  A=int(input())
  B=int(input())
  print(A+B)
else:
  print('Hello World')

Solution (Python):
n=int(input())
if n==1:
  print("Hello World")
else:
  a=int(input())
  b=int(input())
  print(a+b)

Solution (Python):
n=int(input())
if n==1:print("Hello World")
else:
    a=int(input())
    b=int(input())
    print(a+b)

Solution (Python):
n = int(input())
if n == 1:
    print("Hello World")
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):




def main():
    N = int(input())
    if N == 1:
        print('Hello World')
    else:
        A = int(input())
        B = int(input())
        print(A + B)


if __name__ == "__main__":
    main()

Solution (Python):
N = int(input())
if N == 1:
    print("Hello World")
elif N == 2:
    A = int(input())
    B = int(input())
    print(A + B)

Solution (Python):
if input() == '1':
    print('Hello World')
else:
    a, b = [int(input()) for _ in range(2)]
    print(a + b)

Solution (Python):
n = int(input())
if n == 1: print("Hello World")
else:
    answer = 0
    for x in range(2):
        answer += int(input())
    print(answer)

Solution (Python):
n=int(input())
if n==1:
  print("Hello World")
else:
  a=int(input())
  b=int(input())
  print(a+b)

Solution (Python):
N = int(input())
if N == 1:
  print("Hello World")
if N == 2:
  A = int(input())
  B = int(input())
  print(A+B)

Solution (Python):
N=int(input())
if N==1:
  print("Hello World")
else:
  A=int(input())
  B=int(input())
  print(A+B)

Solution (Python):
age = int(input())

if age == 1:
  print("Hello World")
else:
  A = int(input())
  B = int(input())
  print(A + B)

Solution (Python):
N = int(input())
if N ==1:
    print('Hello World')
    exit()
if N == 2:
    A = int(input())
    B = int(input())
    print(A+B)

Solution (Python):
n = int(input())

if n == 1:
  print("Hello World")
else:
  a = int(input())
  b = int(input())
  print(a+b)

Solution (Python):
N = int(input())


if N == 1:
    print('Hello World')
else:
    A = int(input())
    B = int(input())
    print(A + B)

Solution (Python):
N=int(input())

if N==1:
    print("Hello World")
else:
    A=int(input())
    B=int(input())
    print(A+B)

Solution (Python):
n = int(input())
if n == 1:
  print("Hello World")
else:
  a = int(input())
  b = int(input())
  print(a + b)

Solution (Python):
k = int(input())
if k==2:
  a = int(input())
  b = int(input())
  print(a+b)
else:
  print("Hello World")

Solution (Python):
n = int(input())

if n==1:
	print("Hello World")

elif n==2:
	a = int(input())
	b = int(input())

	print(a+b)

Solution (Python):
n = int(input())
if n==1:
    print("Hello World")
else:
    A=int(input())
    B=int(input())
    print(A+B)

Solution (Python):
if int(input())==1:
    print('Hello World')
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
n = int(input())
if n == 1:
    print("Hello World")
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
N=int(input())

if N==1:
    print("Hello World")
else:
    A=int(input())
    B=int(input())
    print(A+B)

Solution (Python):
def main():
    N = input()
    if N == "1":
        print("Hello World")
    else:
        A = int(input())
        B = int(input())
        print(A + B)


if __name__ == '__main__':
    main()

Solution (Python):

import sys
read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines
n = int(readline())
if n == 1:
    print("Hello World")
if n == 2:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
f = lambda : int(input())
n = f()
if n == 1:
  print('Hello World')
else:
  print(f()+f())

Solution (Python):
N = int(input())
if N == 1:
  print("Hello World")
else:
  a = int(input())
  b = int(input())
  print(a+b)

Solution (Python):
X = int(input())
if X==1:
	print("Hello World")
else:
	A = int(input())
	B = int(input())
	print(A+B)

Solution (Python):
N = int(input())

if N == 1:
    print('Hello World')
else :
    A = int(input())
    B = int(input())
    print(A + B)

Solution (Python):
import sys
import math
import itertools

n=int(input())
if n==1:
	print("Hello World")
	sys.exit()
a=int(input())
b=int(input())
print(a+b)

Solution (Python):
n = int(input())

if n == 1:
    print('Hello World')
elif n == 2:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
n = int(input())
if n == 1:
    print("Hello World")
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
n = int( input() )

if( n == 1 ):
  print("Hello World")
else:
  a = int( input() )
  b = int( input() )
  print(a+b)

Solution (Python):
import sys

INPUT = lambda: sys.stdin.readline().rstrip()
INT = lambda: int(INPUT())

sys.setrecursionlimit(10 ** 9)


def main():
    N = INT()

    if N == 1: print("Hello World")
    else:
        A = INT()
        B = INT()
        print(A + B)


if __name__ == '__main__':
    main()

Solution (Python):
n=int(input())
if n == 1:
  print('Hello World')
else:
  a = int(input())
  b = int(input())
  print(a + b)

Solution (Python):
N = int(input())

if N == 1:
    print("Hello World")
else:
    A = int(input())
    B = int(input())
    print(A+B)

Solution (Python):
"""
author : halo2halo
date : 22, Jan, 2020
"""

import sys



read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines

N = int(readline())
if N == 1:
    print("Hello World")
else:
    A, B = map(int, read().split())
    print(A + B)

Solution (Python):
N = int(input())
if N == 1:
    print("Hello World")
else:
    A = int(input())
    B = int(input())
    print(A+B)

Solution (Python):
N = int(input())
if N == 1:
    print("Hello World")
elif N ==2:
    A = int(input())
    B = int(input())
    print(A+B)

Solution (Python):
N = int(input())
if N == 1:
    print("Hello World")
else:
    A = int(input())
    B = int(input())
    print(A+B)

Solution (Python):
n=int(input())
print('Hello World' if n==1 else int(input())+int(input()))

Solution (Python):
def p_a():
    n = int(input())
    if n == 1:
        print("Hello World")
    else:
        a = int(input())
        b = int(input())
        print(a + b)
        
p_a()