package main

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

func main() {
	moves := parseInput()
	for _, m := range moves {
		fmt.Print(*m, " ")
	}
	fmt.Println()
	fmt.Println(maze(moves, 0, 0))
}

func parseInput() []*int {
	var in string
	moves := []*int{}
	sc := bufio.NewScanner(os.Stdin)
	for sc.Scan() {
		i, err := strconv.Atoi(sc.Text())
		//fmt.Println(i)
		if err != nil {
			log.Fatalln("Invalid input", in)
		}
		moves = append(moves, &i)
	}
	return moves
}

func maze(moves []*int, pos int, incr int) int {
	//fmt.Println("Taille", len(moves))
	//fmt.Println("pos", pos)
	offset := *moves[pos]
	//fmt.Println("offset", offset)
	newpos := pos + offset
	if newpos >= len(moves) {
		return incr + 1
	}
	offset++
	moves[pos] = &offset
	//fmt.Println("Newoffset at ", pos, *moves[pos])
	return maze(moves, newpos, incr+1)
}