/*
 *  Compilation:  kotlinc Students.kt
 *  Execution:    kotlin StudentsKt < students.txt
 *
 *  Reads in the integer n from standard input, then a list
 *  of n student records, where each record consists of four
 *  fields, separated by whitespace:
 *      - first name
 *      - last name
 *      - email address
 *      - which section they're in
 *
 *  Then, print out a list of email address of students in section 4 and 5.
 *
 *  % kotlin StudentsKt < students.txt
 *  Sarah Wang twang 7
 *  Austin Taylor actaylor 1
 *  David Rosner drosner 4
 *  Rebecca Allen rebeccaa 7
 *  Rajiv Ayyangar ayyangar 7
 *  Daniel Barrett drbarret 8
 *  Nic Byrd nbyrd 7
 *  Emily Capra ecapra 8
 *  Johnny Clore jclore 7
 *  ...
 *
 * % Section 4
 *  ---------
 *  drosner
 *  jcharles
 *  jph
 *  mlampert
 *  ...
 *
 *  Section 5
 *  ---------
 *  giwank
 *  agrozdan
 *  ajh
 *  akornell
 *  ...
 *
 */

fun main(args: Array<String>) { 

    val scanner = java.util.Scanner(System.`in`)

    // read the number of students
    val n = scanner.nextInt()

    // initialize four parallel arrays
    val first = Array<String>(n) { "" }
    val last = Array<String>(n) { "" }
    val email = Array<String>(n) { "" }
    val section = IntArray(n)

    // read in the data
    for (i in 0 until n) {
        first[i] = scanner.next()
        last[i] = scanner.next()
        email[i] = scanner.next()
        section[i] = scanner.nextInt()
    }

    // print email addresses of all students in section 4
    println("""Section 4
              |---------
        """.trimMargin())
    for (i in 0 until n) {
        if (section[i] == 4)
            println(email[i])
    }
    println()

    // print email addresses of all students in section 5
    println("""Section 5
              |---------
        """.trimMargin())
    for (i in 0 until n) {
        if (section[i] == 5) {
            println(email[i])
        }
    }
}