{"raw_statement":[{"iden":"problem statement","content":"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.  \nOne 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 $A+B$.  \nTakahashi, who is taking this exam, suddenly forgets his age.  \nHe 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 $N=2$.  \nWrite this program for him."},{"iden":"constraints","content":"*   $N$ is $1$ or $2$.\n*   $A$ is an integer between $1$ and $9$ (inclusive).\n*   $B$ is an integer between $1$ and $9$ (inclusive)."},{"iden":"input","content":"Input is given from Standard Input in one of the following formats:\n\n1\n\n2\n$A$\n$B$"},{"iden":"sample input 1","content":"1"},{"iden":"sample output 1","content":"Hello World\n\nAs $N=1$, Takahashi is one year old. Thus, we should print `Hello World`."},{"iden":"sample input 2","content":"2\n3\n5"},{"iden":"sample output 2","content":"8\n\nAs $N=2$, Takahashi is two years old. Thus, we should print $A+B$, which is $8$ since $A=3$ and $B=5$."}],"translated_statement":null,"sample_group":[],"show_order":["default"],"formal_statement":null,"simple_statement":null,"has_page_source":true}