Sumo

AtCoder

IDm_solutions2019_b

Time2000ms

Memory256MB

Difficulty—

Takahashi is competing in a sumo tournament. The tournament lasts for $15$ days, during which he performs in one match per day. If he wins $8$ or more matches, he can also participate in the next tournament. The matches for the first $k$ days have finished. You are given the results of Takahashi's matches as a string $S$ consisting of `o` and `x`. If the $i$\-th character in $S$ is `o`, it means that Takahashi won the match on the $i$\-th day; if that character is `x`, it means that Takahashi lost the match on the $i$\-th day. Print `YES` if there is a possibility that Takahashi can participate in the next tournament, and print `NO` if there is no such possibility. ## Constraints * $1 \leq k \leq 15$ * $S$ is a string of length $k$ consisting of `o` and `x`. ## Input Input is given from Standard Input in the following format: $S$ [samples]

Samples

Input #1

oxoxoxoxoxoxox

Output #1

YES

Takahashi has $7$ wins and $7$ losses before the last match. If he wins that match, he will have $8$ wins.

Input #2

xxxxxxxx

Output #2

NO

API Response (JSON)

{
  "problem": {
    "name": "Sumo",
    "description": {
      "content": "Takahashi is competing in a sumo tournament. The tournament lasts for $15$ days, during which he performs in one match per day. If he wins $8$ or more matches, he can also participate in the next tour",
      "description_type": "Markdown"
    },
    "platform": "AtCoder",
    "limit": {
      "time_limit": 2000,
      "memory_limit": 262144
    },
    "difficulty": "None",
    "is_remote": true,
    "is_sync": true,
    "sync_url": null,
    "sign": "m_solutions2019_b"
  },
  "statements": [
    {
      "statement_type": "Markdown",
      "content": "Takahashi is competing in a sumo tournament. The tournament lasts for $15$ days, during which he performs in one match per day. If he wins $8$ or more matches, he can also participate in the next tour...",
      "is_translate": false,
      "language": "English"
    }
  ]
}

Full JSON Raw Segments