import msvcrt

cant_input = list(map(str, string.ascii_letters)) + [str(x) for x in range(10)]

def Input():
    INPUT = ''
    key = ''
    while True:
        if msvcrt.kbhit():
            key = str(msvcrt.getch())
            key = key.split('\'')[1]

            if key not in cant_input and key != '\\r':
                INPUT += key
                print(key, end='')
            elif key == '\\r':
                return INPUT

print(Input())