import java.util.*

fun main(arr:Array<String>) {
    var inBox100 = readLine()!!.toInt()
    var inBox25 = readLine()!!.toInt()
    var inBox1 = readLine()!!.toInt()

    inBox25 = inBox25 + inBox1 / 25
    inBox1 = inBox1 % 25

    inBox100 = inBox100 + inBox25 / 4
    inBox25 = inBox25 % 4

    inBox100 = inBox100 % 10

    println(inBox100 + inBox25 + inBox1)
}