package main

import (
	"bufio"
	"fmt"
	"os"
)

const (
	GROUP = iota
	GARB
	IGN
)

var (
	state int
	group int
	score int
)

func main() {
	state = GROUP
	sc := bufio.NewScanner(os.Stdin)
	sc.Split(bufio.ScanRunes)
	for sc.Scan() {
		parse(sc.Text())
	}
	fmt.Println("SCORE:", score)
}

func parse(c string) {
	fmt.Println(c)
	if state == IGN {
		state = GARB
	} else {
		switch c {
		case ",":
			if state == GROUP {
				fmt.Println("sep group")
				//score += group
			}
		case "{":
			if state == GROUP {
				fmt.Println("start group")
				group++
			}
		case "}":
			if state == GROUP {
				fmt.Println("end group")
				score += group
				group--
			}
		case "<":
			if state == GROUP {
				state = GARB
			}
		case ">":
			if state == GARB {
				state = GROUP
			}
		case "!":
			if state == GARB {
				state = IGN
			}
		}
	}
	fmt.Println(state, group, score)
}