Security

AtCoder

IDabc131_a

Time2000ms

Memory256MB

Difficulty—

The door of Snuke's laboratory is locked with a security code. The security code is a $4$\-digit number. We say the security code is _hard to enter_ when it contains two consecutive digits that are the same. You are given the current security code $S$. If $S$ is hard to enter, print `Bad`; otherwise, print `Good`. ## Constraints * $S$ is a $4$\-character string consisting of digits. ## Input Input is given from Standard Input in the following format: $S$ [samples]

Samples

Input #1

Output #1

Bad

The second and third digits are the same, so $3776$ is hard to enter.

Input #2

Output #2

Good

There are no two consecutive digits that are the same, so $8080$ is not hard to enter.

Input #3

Output #3

Bad

Input #4

Output #4

Bad

API Response (JSON)

{
  "problem": {
    "name": "Security",
    "description": {
      "content": "The door of Snuke's laboratory is locked with a security code. The security code is a $4$\\-digit number. We say the security code is _hard to enter_ when it contains two consecutive digits that are th",
      "description_type": "Markdown"
    },
    "platform": "AtCoder",
    "limit": {
      "time_limit": 2000,
      "memory_limit": 262144
    },
    "difficulty": "None",
    "is_remote": true,
    "is_sync": true,
    "sync_url": null,
    "sign": "abc131_a"
  },
  "statements": [
    {
      "statement_type": "Markdown",
      "content": "The door of Snuke's laboratory is locked with a security code.\nThe security code is a $4$\\-digit number. We say the security code is _hard to enter_ when it contains two consecutive digits that are th...",
      "is_translate": false,
      "language": "English"
    }
  ]
}

Full JSON Raw Segments