A Barricade

AtCoder

IDkupc2016_a

Time1000ms

Memory256MB

Difficulty—

Summer vacation ended at last and the second semester has begun. You, a Kyoto University student, came to university and heard a rumor that somebody will barricade the entrance of your classroom. The barricade will be built just before the start of the $A$\-th class and removed by Kyoto University students just before the start of the $B$\-th class. All the classes conducted when the barricade is blocking the entrance will be cancelled and you will not be able to attend them. Today you take $N$ classes and class $i$ is conducted in the $t_i$\-th period. You take at most one class in each period. Find the number of classes you can attend. ## Constraints * $1 \leq N \leq 1000$ * $1 \leq A < B \leq 10^9$ * $1 \leq t_i \leq 10^9$ * All $t_i$ values are distinct. ## Input $N$, $A$ and $B$ are given on the first line and $t_i$ is given on the $(i+1)$\-th line. $N$ $A$ $B$ $t1$ : $tN$ [samples]

Samples

Input #1

Output #1

4

You can not only attend the third class.

Input #2

Output #2

1

You can only attend the fifth class.

Input #3

Output #3

4

You can attend all the classes.

Input #4

2 1 2
1
2

Output #4

1

You can not attend the first class, but can attend the second.

API Response (JSON)

{
  "problem": {
    "name": "A Barricade",
    "description": {
      "content": "Summer vacation ended at last and the second semester has begun. You, a Kyoto University student, came to university and heard a rumor that somebody will barricade the entrance of your classroom. The ",
      "description_type": "Markdown"
    },
    "platform": "AtCoder",
    "limit": {
      "time_limit": 1000,
      "memory_limit": 262144
    },
    "difficulty": "None",
    "is_remote": true,
    "is_sync": true,
    "sync_url": null,
    "sign": "kupc2016_a"
  },
  "statements": [
    {
      "statement_type": "Markdown",
      "content": "Summer vacation ended at last and the second semester has begun. You, a Kyoto University student, came to university and heard a rumor that somebody will barricade the entrance of your classroom. The ...",
      "is_translate": false,
      "language": "English"
    }
  ]
}

Full JSON Raw Segments