Snuke's favorite YAKINIKU

AtCoder
IDcode_festival_2017_quala_a
Time2000ms
Memory256MB
Difficulty
Ringo is giving a present to Snuke. Ringo has found out that Snuke loves _yakiniku_ (a Japanese term meaning grilled meat. _yaki_: grilled, _niku_: meat). He supposes that Snuke likes grilled things starting with `YAKI` in Japanese, and does not like other things. You are given a string $S$ representing the Japanese name of Ringo's present to Snuke. Determine whether $S$ starts with `YAKI`. ## Constraints * $1 \leq |S| \leq 10$ * $S$ consists of uppercase English letters. ## Input Input is given from Standard Input in the following format: $S$ [samples]
Samples
Input #1
YAKINIKU
Output #1
Yes

`YAKINIKU` starts with `YAKI`.
Input #2
TAKOYAKI
Output #2
No

`TAKOYAKI` (a Japanese snack. _tako_: octopus) does not start with `YAKI`.
Input #3
YAK
Output #3
No
API Response (JSON)
{
  "problem": {
    "name": "Snuke's favorite YAKINIKU",
    "description": {
      "content": "Ringo is giving a present to Snuke. Ringo has found out that Snuke loves _yakiniku_ (a Japanese term meaning grilled meat. _yaki_: grilled, _niku_: meat). He supposes that Snuke likes grilled things s",
      "description_type": "Markdown"
    },
    "platform": "AtCoder",
    "limit": {
      "time_limit": 2000,
      "memory_limit": 262144
    },
    "difficulty": "None",
    "is_remote": true,
    "is_sync": true,
    "sync_url": null,
    "sign": "code_festival_2017_quala_a"
  },
  "statements": [
    {
      "statement_type": "Markdown",
      "content": "Ringo is giving a present to Snuke.\nRingo has found out that Snuke loves _yakiniku_ (a Japanese term meaning grilled meat. _yaki_: grilled, _niku_: meat). He supposes that Snuke likes grilled things s...",
      "is_translate": false,
      "language": "English"
    }
  ]
}
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