Submission #2251964

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Source Code Expand

fun main(args: Array<String>) {
  val sc = if (args.size > 1) java.util.Scanner(java.io.File(args[1])) else java.util.Scanner(System.`in`)
  solve(sc)
}

fun solve(sc: java.util.Scanner) {
  val N = sc.nextInt()
  val a = IntArray(N) { sc.nextInt() }
  val r = mutableMapOf<Int, Int>()
  a.forEach {
    r[it] = (r[it] ?: 0) + 1
    r[it - 1] = (r[it - 1] ?: 0) + 1
    r[it + 1] = (r[it + 1] ?: 0) + 1
  }
  println(r.maxBy { it.value }?.value)
}

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