import java.io.File

fun main(args: Array<String>) {
    val lowestStudentNum: MutableMap<String, Int> = mutableMapOf()
    val lowestStudentNumGrade: MutableMap<String, Int> = mutableMapOf()
    File("grades.txt").forEachLine { line ->
        var parts = line.split('|')
        var num = parts[0].toInt()
        var grade = parts[2].toInt()
        var className = parts[1]

        if (!lowestStudentNum.contains(className) || num < lowestStudentNum[className]!!) {
            lowestStudentNum.put(className, num)
            lowestStudentNumGrade.put(className, grade)
        }
    }
    println(lowestStudentNumGrade)
}