#!/usr/bin/env python2

(lambda sys, loop, seq:
    reduce(
        lambda stack, char: {
            '+': lambda stack: [seq(stack[0], lambda (left, head, right): (left, head + 1, right))] + stack[1:],
            '-': lambda stack: [seq(stack[0], lambda (left, head, right): (left, head - 1, right))] + stack[1:],
            '<': lambda stack: [seq(stack[0], lambda (left, head, right): (left[:-1], left[-1], [head]+right))] + stack[1:],
            '>': lambda stack: [seq(stack[0], lambda (left, head, right): (left + [head], (right or [0])[0], right[1:]))] + stack[1:],
            ',': lambda stack: [seq(stack[0], lambda (left, head, right): (left, ord(sys.stdin.read(1) or chr(head)), right))] + stack[1:],
            '.': lambda stack: [seq(stack[0], lambda (left, head, right): (left, sys.stdout.write(chr(head)) or head, right))] + stack[1:],
            '[': lambda stack: [lambda data: data] + stack,
            ']': lambda stack: [seq(stack[1], loop(stack[0]))] + stack[2:]
        }[char](stack),
        filter(lambda c: c in "+-<>[],.", file(sys.argv[1]).read()),
        [lambda data: data]) [0] (([], 0, []))
)(
    __import__("sys"),
    lambda body: lambda data: (lambda hack: map(lambda data: hack.append(body(data)) if data[1] else data, hack)[-1])([data]),
    lambda first, next: lambda data: next(first(data))
)