Forbidden Pattern

{
  "problem": {
    "name": "Forbidden Pattern",
    "description": {
      "content": "",
      "description_type": "Markdown"
    },
    "platform": "AtCoder",
    "limit": {
      "time_limit": 2000,
      "memory_limit": 262144
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    "difficulty": "None",
    "is_remote": true,
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    "sign": "toyota2023spring_final_f"
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