#!/usr/bin/ruby

i = 0
stack = Array.new(30000){0}
 
while c = STDIN.getc
	case c
	when '+'
		stack[i] += 1
	when '-'
		stack[i] -= 1
	when '>'
		i += 1
	when '<'
		i -= 1
	when '.'
		puts stack[i]
	when ","
		c = STDIN.getc
	when '['
		puts "["
	when ']'
		puts "]"
	end
end