filename = input('Input name of your file: ')
file = open(filename, 'r')
code = file.read()
choosen = 0
data = []
data.append(0)
parse_now = 0
while parse_now < len(code):
    x = code[parse_now]
    if x.lower() == '+':
        data[choosen] += 1
        if data[choosen] >= 256:
            data[choosen] = 0
    elif x.lower() == '-':
        data[choosen] += -1
        if data[choosen] <= -1:
            data[choosen] = 255
    elif x.lower() == '>':
        choosen += 1
        if choosen == len(data):
            data.append(0)
    elif x.lower() == '<':
        choosen += -1
        if choosen <= -1:
            choosen = 0
    elif x.lower() == '[':
        if data[choosen] == 0:
            cycle_counter = 1
            while cycle_counter != 0:
                parse_now += 1
                if code[parse_now] == ']':
                    cycle_counter += -1
                elif code[parse_now] == '[':
                    cycle_counter += 1
    elif x.lower() == ']':
        if data[choosen] != 0:
            cycle_counter = 1
            while  cycle_counter != 0:
                parse_now += -1
                if code[parse_now] == '[':
                    cycle_counter += -1
                elif code[parse_now] == ']':
                    cycle_counter += 1
    elif x.lower() == '.':
        print(chr(data[choosen]), end='')
    elif x.lower() == ',':
        data[choosen] == ord(input('Program requires input: ' ))
    parse_now += 1