{
  "summary": {
    "max_calls": 2,
    "max_input_chars": 1000,
    "jobs": [
      {"id": "J1", "chars": 20, "accepted": true},
      {"id": "J2", "chars": 2000, "accepted": false},
      {"id": "J3", "chars": 30, "accepted": true},
      {"id": "J4", "chars": 40, "accepted": false}
    ],
    "explanation": "最多允许2次调用，且每次输入字符数不超过1000。J2字符数2000超限，J4虽字符数40但调用次数限制已满，故拒绝。"
  }
}