Programming Education

AtCoder

IDabc112_a

Time2000ms

Memory256MB

Difficulty—

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 $A$ $B$ [samples]

Samples

Input #1

Output #1

Hello World

As $N=1$, Takahashi is one year old. Thus, we should print `Hello World`.

Input #2

2
3
5

Output #2

8

As $N=2$, Takahashi is two years old. Thus, we should print $A+B$, which is $8$ since $A=3$ and $B=5$.

API Response (JSON)

{
  "problem": {
    "name": "Programming Education",
    "description": {
      "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.   One day, there was an exam where a one-year-old chi",
      "description_type": "Markdown"
    },
    "platform": "AtCoder",
    "limit": {
      "time_limit": 2000,
      "memory_limit": 262144
    },
    "difficulty": "None",
    "is_remote": true,
    "is_sync": true,
    "sync_url": null,
    "sign": "abc112_a"
  },
  "statements": [
    {
      "statement_type": "Markdown",
      "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 chi...",
      "is_translate": false,
      "language": "English"
    }
  ]
}

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