Sandglass2

AtCoder

IDabc072_a

Time2000ms

Memory256MB

Difficulty—

We have a sandglass that runs for $X$ seconds. The sand drops from the upper bulb at a rate of $1$ gram per second. That is, the upper bulb initially contains $X$ grams of sand. How many grams of sand will the upper bulb contains after $t$ seconds? ## Constraints * $1≤X≤10^9$ * $1≤t≤10^9$ * $X$ and $t$ are integers. ## Input The input is given from Standard Input in the following format: $X$ $t$ [samples]

Samples

Input #1

100 17

Output #1

83

$17$ out of the initial $100$ grams of sand will be consumed, resulting in $83$ grams.

Input #2

48 58

Output #2

0

All $48$ grams of sand will be gone, resulting in $0$ grams.

Input #3

1000000000 1000000000

Output #3

API Response (JSON)

{
  "problem": {
    "name": "Sandglass2",
    "description": {
      "content": "We have a sandglass that runs for $X$ seconds. The sand drops from the upper bulb at a rate of $1$ gram per second. That is, the upper bulb initially contains $X$ grams of sand. How many grams of sand",
      "description_type": "Markdown"
    },
    "platform": "AtCoder",
    "limit": {
      "time_limit": 2000,
      "memory_limit": 262144
    },
    "difficulty": "None",
    "is_remote": true,
    "is_sync": true,
    "sync_url": null,
    "sign": "abc072_a"
  },
  "statements": [
    {
      "statement_type": "Markdown",
      "content": "We have a sandglass that runs for $X$ seconds. The sand drops from the upper bulb at a rate of $1$ gram per second. That is, the upper bulb initially contains $X$ grams of sand.\nHow many grams of sand...",
      "is_translate": false,
      "language": "English"
    }
  ]
}

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