import sys
import getch

memory, stack, ptr, i, program = [0 for v in range(300000)], [], 0, 0, sys.argv[1]


while i < len(program):
    cmd = program[i]

    memory[ptr], ptr = (
                            (memory[ptr] - 1) % 256
                        ) if cmd == "-" else (
                                (memory[ptr] + 1) % 256
                        ) if cmd == "+" else [
                                lambda x:
                                    memory[ptr],
                                lambda x:
                                    ord(getch.getch()),
                                print(
                                        chr(memory[ptr]),
                                    end="")
                                    if cmd == "." 
                                    else None

                                ][
                                        1 
                                        if cmd == "," 
                                        else 
                                        0
                                    ](None), (
                                                (ptr - 1) % len(
                                                                memory
                                                                ) 
                                            ) if cmd == "<" else (
                                                (ptr + 1) % len(
                                                                memory
                                                                )
                                            ) if cmd == ">" else ( 
                                                ptr
                                            )

    if cmd == "]":
        depth = 0

        while not (program[i] == "[" and depth == 0):
            depth, i = (
                            depth + 1
                    ) if program[i-1] == "]" else (
                            depth - 1
                    ) if program[i-1] == "[" and depth != 0 else (
                            depth
                    ), i-1
        i -= 1

    if cmd == "[":
        if memory[ptr] == 0:
            depth = 0

            while not (program[i] == "]" and depth == 0) and i < len(program):
                depth, i = (
                            depth + 1 
                        ) if program[i+1] == "[" else (
                            depth - 1
                        ) if program[1+i] == "]" and depth != 0 else (
                            depth
                        ), i+1

    i += 1