输出绝对值

{
  "problem": {
    "name": "输出绝对值",
    "description": {
      "content": "输入一个浮点数 $n$，输出这个浮点数的绝对值。",
      "description_type": "Markdown"
    },
    "platform": "Luogu",
    "limit": {
      "time_limit": 1000,
      "memory_limit": 131072
    },
    "difficulty": {
      "LuoguStyle": "P1"
    },
    "is_remote": true,
    "is_sync": true,
    "sync_url": null,
    "sign": "LGB2036"
  },
  "statements": [
    {
      "statement_type": "Markdown",
      "content": "输入一个浮点数 $n$，输出这个浮点数的绝对值。\n\n## Input\n\n输入一个浮点数 $n$，其绝对值不超过 $10000$。\n\n## Output\n\n输出 $n$ 的绝对值，保留到小数点后两位。\n\n[samples]...",
      "is_translate": false,
      "language": "English"
    }
  ]
}