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):

N = int(input())

if (N == 1):

    print("Hello World")

else:

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

    print (A + B)

Solution (Python):
def abc():
    age = int(input().rstrip())

    if age == 1:
        print('Hello World')
        return

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


abc()

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
sys.setrecursionlimit(10**7)
def lmi(): return list(map(int, input().split()))

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

Solution (Python):
import numpy as np



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):
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 = 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):

X = int(input())
if X == 1:
    print('Hello World')
elif X == 2:
    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):
age = int(input())
if age == 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 = 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):
I = int(input())

if(I == 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
if input()=="1": print("Hello World"),sys.exit()
print(int(input())+int(input()))

Solution (Python):
n = int(input())
if n == 2:
    a = int(input())
    b = int(input())

if n ==1:
    print("Hello World")
else:
    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:
    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):
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, os

f = lambda:list(map(int,input().split()))
if 'local' in os.environ :
    sys.stdin = open('./input.txt', 'r')

def solve():
    n = f()[0]

    if n == 1:
        print('Hello World')
    else:
        a = f()[0]
        b = f()[0]
        print(a+b)


solve()

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:
  a=input()
  b=input()
  print(int(a)+int(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')
elif n == 2:
    a = int(input())
    b = int(input())
    print(a + b)

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

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

Solution (Python):
from sys import stdin
N = int(stdin.readline().rstrip())
if N == 1:
    print('Hello World')
else:
    A, B = [int(stdin.readline().rstrip()) for _ in range(N)]
    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):
from __future__ import print_function


import sys
import math
import string
import fractions
import re
import array
import copy
import functools
import operator

import collections
import itertools
import bisect
import heapq


from heapq import heappush
from heapq import heappop



import random




def eprint(*args, **kwargs):
    print(*args, file=sys.stderr, **kwargs)


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())

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

Solution (Python):

l = input()
N = int(l)

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

if N == 2:
    A = int(input())
    B = int(input())
    print(int(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 :
    input_list = []
    for i in range(n) :
        a = int(input())
        input_list.append(a)
    
    print(input_list[0]+input_list[1])

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

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

Solution (Python):
import sys
 
stdin = sys.stdin
 
ni = lambda: int(ns())
na = lambda: list(map(int, stdin.readline().split()))
ns = lambda: stdin.readline().rstrip()  
 
n = ni()
if n==1:
    print('Hello World')
else:
    a = ni()
    b = ni()
    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):





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):
age = int(input())

if age == 1:
  print("Hello World")
elif age == 2:
  print(int(input()) + int(input()))

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

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:
  print(int(input()) + int(input()))

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:
    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)
main()

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

Solution (Python):
n = int(input())
[print(int(input())+int(input())) if n == 2 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):
first = int(input())

if first == 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')
elif n == 2:
    a = int(input())
    b = int(input())
    print(a + b)
else:
    pass

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):

"""
A - Programming Education
https://atcoder.jp/contests/abc112/tasks/abc112_a

"""
import sys


def solve(N):
    if N == 1:
        return 'Hello World'
    else:
        return int(input()) + int(input())


def main(args):
    N = int(input())
    ans = solve(N)
    print(ans)


if __name__ == '__main__':
    main(sys.argv[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):
import sys
import bisect
input = sys.stdin.readline

N = int(input())

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

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):
import sys


def input():
    return sys.stdin.readline()[:-1]








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

Solution (Python):
n = int(input())
if n == 2:
  aa = int(input())
  bb = int(input())
  print(aa + bb)
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):
a=int(input())
if(a==1):
  print('Hello World')
else:
  b=int(input())
  c=int(input())
  d=b+c
  print(d)

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

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

Solution (Python):
if __name__ == '__main__':
    I = int(input())
    if I == 2:
        A = int(input())
        B = int(input())

    if I == 1:
        print('Hello World')
    elif I == 2:
        print(str(A+B))

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

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

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

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

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

if n==1:
    print("Hello World")
else:
    num = []
    for _ in range(n):
        num.append(int(input()))
    print(sum(num))

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

Solution (Python):
n,*t=map(int,open(0));print(n%2*'Hello World'or sum(t))

Solution (Python):
n,*t=map(int,open(0));print(n%2*'Hello World'or sum(t))

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):
age = int(input())

if age == 1:
    print("Hello World")
else:
    print(sum([int(input()) for x in range(age)]))

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 = sys.stdin.readline

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):
num = input()

if num == "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 int(input())+int(input()))

Solution (Python):
G = int(input())
if G == 1:
    print('Hello World')
if G == 2:
    ANS = 0
    for i in range(2):
        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):
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):


from bisect import bisect_left as binl
from copy import copy, deepcopy

def intin():
    input_tuple = input().split()
    if len(input_tuple) <= 1:
        return int(input_tuple[0])
    return tuple(map(int, input_tuple))


def intina():
    return [int(i) for i in input().split()]


def intinl(count):
    return [intin() for _ in range(count)]


def modadd(x, y):
    global mod
    return (x + y) % mod


def modmlt(x, y):
    global mod
    return (x * sy) % mod


def lcm(x, y):
    while y != 0:
        z = x % y
        x = y
        y = z
    return x


def make_linklist(xylist):
    linklist = {}
    for a, b in xylist:
        linklist.setdefault(a, [])
        linklist.setdefault(b, [])
        linklist[a].append(b)
        linklist[b].append(a)
    return linklist


def calc_longest_distance(linklist, v=1):
    distance_list = {}
    distance_count = 0
    distance = 0
    vlist_previous = []
    vlist = [v]
    nodecount = len(linklist)

    while distance_count < nodecount:
        vlist_next = []
        for v in vlist:
            distance_list[v] = distance
            distance_count += 1
            vlist_next.extend(linklist[v])
        distance += 1
        vlist_to_del = vlist_previous
        vlist_previous = vlist
        vlist = list(set(vlist_next) - set(vlist_to_del))

    max_distance = -1
    max_v = None
    for v, distance in distance_list.items():
        if distance > max_distance:
            max_distance = distance
            max_v = v

    return (max_distance, max_v)


def calc_tree_diameter(linklist, v=1):
    _, u = calc_longest_distance(linklist, v)
    distance, _ = calc_longest_distance(linklist, u)
    return distance





def main():
    n = intin()

    if n == 1:
        print('Hello World')
    else:
        a = intin()
        b = intin()
        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):
if int(input()) == 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')
elif age == 2:
    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')
elif N == 2:
    A = int(input())
    B = int(input())
    print(A+B)

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

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

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

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

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

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

Solution (Python):
age = int(input())
if(age == 1):
    print("Hello World")
else:
    A = int(input())
    B = int(input())
    ans = A + B
    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):
a = int(input())
if a == 1:
    print('Hello World')
else:
    b = int(input())
    c = int(input())
    print(b+c)

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):
a=int(input())

if a==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):

import sys
from math import *
from itertools import *
from collections import *
from functools import *
try:
    from math import gcd
except Exception:
    from fractions import gcd
readInt = lambda: int(sys.stdin.readline())
readIntN = lambda: [int(v) for v in sys.stdin.readline().split(' ')]



def main():
    n = readInt()
    result = 'Hello World'
    if n == 2:
        a = readInt()
        b = readInt()
        result = a + b
    print(result)

if __name__ == '__main__':
    main()

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

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 = 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(sum([int(input()) for i in range(n)]))

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):
import numpy as np
import sys
 
stdin = sys.stdin
 
ni = lambda: int(ns())
na = lambda: list(map(int, stdin.readline().split()))
ns = lambda: stdin.readline().rstrip()  
 
n = ni()
if n==1:
    print('Hello World')
else:
    a = ni()
    b = ni()
    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):
a=input()
if a=="1":
    print("Hello World")
else:
    a=[int(input()) for i in range(2)]
    print(a[0]+a[1])

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

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

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

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

Solution (Python):
import functools
import math

import os

INF = float('inf')


def inp():
    return int(input())


def inpf():
    return float(input())


def inps():
    return input()


def inl():
    return list(map(int, input().split()))


def inlf():
    return list(map(float, input().split()))


def inls():
    return input().split()


def debug(fn):
    if not os.getenv('LOCAL'):
        return fn

    @functools.wraps(fn)
    def wrapper(*args, **kwargs):
        print('DEBUG: {}({}) -> '.format(
            fn.__name__,
            ', '.join(
                list(map(str, args)) +
                ['{}={}'.format(k, str(v)) for k, v in kwargs.items()]
            )
        ), end='')
        ret = fn(*args, **kwargs)
        print(ret)
        return ret

    return wrapper


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

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

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

if N == 1:
    print('Hello World')
else:
    A = int(input())
    B = int(input())
    print(int(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 = list(map(int, [input().rstrip() for _ in range(2)]))
    print(a + b)

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

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):
print(int(input())+int(input()) if input()=="2" else "Hello World")

Solution (Python):
n=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)