/**
 * Created by hichikawa on 2015/11/01.
 */

fun main(args: Array<String>) {

    fun readLineInt() : Int{
        val s = readLine() as String
        return s.toInt()
    }

    val sum = readLineInt() * 100 + readLineInt() * 25 + readLineInt() * 1
    var count = 0
    val sumUnder1000 = sum % 1000
    count += sumUnder1000 / 100
    val sumUnder100 = sumUnder1000 % 100
    count += sumUnder100 / 25
    val sumUnder25 = sumUnder100 % 25
    count += sumUnder25
    println(count)
}