Score: 100 points
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.
Input is given from Standard Input in one of the following formats:
1
2 A B
If N=1, print Hello World
; if N=2, print A+B.
1
Hello World
As N=1, Takahashi is one year old. Thus, we should print Hello World
.
2 3 5
8
As N=2, Takahashi is two years old. Thus, we should print A+B, which is 8 since A=3 and B=5.