package main

import (
	"bufio"
	"fmt"
	"os"
	"strconv"
	"strings"
)

const (
	//SZ = 5
	SZ = 256
)

var (
	list    [SZ]int
	lengths []int
	pos     int
	skip    int
)

func main() {
	lengths = parseLengths()
	//fmt.Println(lengths)
	for i, _ := range list {
		list[i] = i
	}
	for _, l := range lengths {
		//fmt.Println(list, pos, skip, l)
		reverse(l)
		pos = (pos + l + skip) % SZ
		skip++
	}
	//fmt.Println(list)

	fmt.Println("Result:", list[0]*list[1])
}

func reverse(l int) {
	if l < 2 {
		return
	}
	rev := make([]int, l, l)
	to := (pos + l) % SZ
	if to > pos {
		for i, n := range list[pos:to] {
			rev[l-i-1] = n
		}
	} else {
		var i, j, n int
		for i, n = range list[pos:SZ] {
			rev[l-i-1] = n
		}
		//fmt.Println("    ", rev)
		for j, n = range list[0:to] {
			rev[l-j-i-2] = n
		}
	}

	//fmt.Println("  ", rev)
	for i, n := range rev {
		list[(pos+i)%SZ] = n
	}
}

func parseLengths() []int {
	l := make([]int, 0, 16)
	sc := bufio.NewScanner(os.Stdin)
	sc.Scan()
	for _, num := range strings.Split(sc.Text(), ",") {
		n, _ := strconv.Atoi(num)
		l = append(l, n)
	}
	return l
}