Circle

AtCoder

IDabc145_a

Time2000ms

Memory256MB

Difficulty—

Given is an integer $r$. How many times is the area of a circle of radius $r$ larger than the area of a circle of radius $1$? It can be proved that the answer is always an integer under the constraints given. ## Constraints * $1 \leq r \leq 100$ * All values in input are integers. ## Input Input is given from Standard Input in the following format: $r$ [samples]

Samples

Input #1

Output #1

4

The area of a circle of radius $2$ is $4$ times larger than the area of a circle of radius $1$.
Note that output must be an integer - for example, `4.0` will not be accepted.

Input #2

Output #2

API Response (JSON)

{
  "problem": {
    "name": "Circle",
    "description": {
      "content": "Given is an integer $r$. How many times is the area of a circle of radius $r$ larger than the area of a circle of radius $1$? It can be proved that the answer is always an integer under the constraint",
      "description_type": "Markdown"
    },
    "platform": "AtCoder",
    "limit": {
      "time_limit": 2000,
      "memory_limit": 262144
    },
    "difficulty": "None",
    "is_remote": true,
    "is_sync": true,
    "sync_url": null,
    "sign": "abc145_a"
  },
  "statements": [
    {
      "statement_type": "Markdown",
      "content": "Given is an integer $r$.\nHow many times is the area of a circle of radius $r$ larger than the area of a circle of radius $1$?\nIt can be proved that the answer is always an integer under the constraint...",
      "is_translate": false,
      "language": "English"
    }
  ]
}

Full JSON Raw Segments