import java.util.*

fun main(arr:Array<String>) {
    val a = readLine()!!.split(" ").map { it.toInt() }
    bRequire = readLine()!!.toInt()
    bReturn = readLine()!!.split(" ").map { it.toInt() }.toTypedArray()
    cRequire = readLine()!!.toInt()
    cReturn = readLine()!!.split(" ").map { it.toInt() }.toTypedArray()
    work.push(Task(a[0], a[1], a[2]))
    while (work.isNotEmpty()) {
        val task = work.pop()
        getAns(task.rem1000, task.rem100, task.rem1)
    }
    val ans = getAns(a[0], a[1], a[2])
    println(ans)
}

var bRequire = 0
var cRequire = 0
var bReturn = arrayOf(0,0,0)
var cReturn = arrayOf(0,0,0)
var work = Stack<Task>()


val dic = mutableMapOf<Int, MutableMap<Int, MutableMap<Int, Int>>>()
fun getAns(rem1000: Int, rem100: Int, rem1: Int):Int {
    if(!dic.containsKey(rem1000)) {
        dic[rem1000] = mutableMapOf()
    }
    if(!dic[rem1000]!!.containsKey(rem100)) {
        dic[rem1000]!![rem100] = mutableMapOf()
    }
    dic[rem1000]!![rem100]!![rem1]?.let { return it }
    val bResult = doOtsukai(bRequire, bReturn, rem1000, rem100, rem1)
    var bRet = 0
    if(bResult.isNotEmpty()) {
        val task = Task(bResult[0], bResult[1], bResult[2])
        if(taskInDic(task)) {
            bRet = getAns(bResult[0], bResult[1], bResult[2]) + 1
        } else {
            work.push(Task(rem1000, rem100, rem1))
            work.push(task)
            return 0
        }
    }
    val cResult = doOtsukai(cRequire, cReturn, rem1000, rem100, rem1)
    var cRet = 0
    if(cResult.isNotEmpty()) {
        val task = Task(bResult[0], bResult[1], bResult[2])
        if(taskInDic(task)) {
            cRet = getAns(cResult[0], cResult[1], cResult[2]) + 1
        } else {
            work.push(Task(rem1000, rem100, rem1))
            work.push(task)
            return 0
        }
    }
    val ans = Math.max(bRet, cRet)
    dic[rem1000]!![rem100]!![rem1] = ans
    return ans
}

class Task(val rem1000: Int, val rem100: Int, val rem1: Int)
fun taskInDic(task: Task):Boolean {
    if(!dic.containsKey(task.rem1000)) {
        return false
    }
    if(!dic[task.rem1000]!!.containsKey(task.rem100)) {
        return false
    }
    return dic[task.rem1000]!![task.rem100]!!.containsKey(task.rem1)
}
fun doOtsukai(require:Int, otusri:Array<Int>, rem1000:Int, rem100:Int, rem1:Int):Array<Int> {
    if(require > rem1000 * 1000 + rem100 * 100 + rem1) {
        return emptyArray()
    }
    var remain = require
    var r1000 = rem1000
    while (remain >= 1000 && r1000 > 0) {
        r1000--
        remain -= 1000
    }
    var r100 = rem100
    while (remain >= 100 && r100 > 0) {
        r100--
        remain -= 100
    }
    if(remain > rem1) {
        return emptyArray()
    }
    val ret = arrayOf(r1000 + otusri[0], r100 + otusri[1], rem1 - remain + otusri[2] )
    return ret
}