N=int(input())
if N==1:
  print("Hello World")
else:
  A,B=(input().split() for i in range(2));print(int(A[0])+int(B[0]))
ef93983a68f083c53e802be2c7c95d28b5615361
<mask token>

<mask token>
if N == 1:
    print('Hello World')
else:
    A, B = (input().split() for i in range(2))
    print(int(A[0]) + int(B[0]))

N = int(input())
if N == 1:
    print('Hello World')
else:
    A, B = (input().split() for i in range(2))
    print(int(A[0]) + int(B[0]))

N=int(input())
if N==1:
  print("Hello World")
else:
  A,B=(input().split() for i in range(2));print(int(A[0])+int(B[0]))