{
  "id": "gift-card-resend-identity-check",
  "synthetic": true,
  "function": "difference",
  "scope": [
    "No real notification is sent here. This is a website-support acceptance brief, not identity verification software or authority to disclose a redeemable code.",
    "本文不发送真实通知，仅用于网站客服交付验收，不是身份认证软件，也不授权泄露可兑换代码。"
  ],
  "cases": [
    {
      "args": [
        100,
        35
      ],
      "expected": 65
    },
    {
      "args": [
        100,
        100
      ],
      "expected": 0
    },
    {
      "args": [
        50,
        0
      ],
      "expected": 50
    }
  ]
}