############### 301
import re

def letter_and_two_digits(s):
    if re.search(r'[A-Z]\d\d', s): # raw string
        return True
    return False

############### 302
import re

def extract_minutes(text):
    result = "<NONE>"
    pattern = "^(\d\d*):(\d\d*)"
    try:
        hour, minute = re.match(pattern, text).groups()
        if int(hour) < 24 and int(hour) >= 0:
            if int(minute) < 60 and int(minute) >= 0:
                result = minute
    finally:
        return result


######################33 303
import re

def build_divisable_pattern():
    pattern = "(00|"
    for i in range(1, 100):
        if i % 4 == 0:
            reg = str(i)
            if len(reg) == 1:
                reg = "0" + reg
            pattern += reg + "|"

    pattern = pattern[:-1] + ")$"
    return pattern


def divisable_by_four(text):
    divisable_pattern = build_divisable_pattern()
    pattern = "(\d*" +divisable_pattern+ ")|^0$"

    result = re.match(pattern, text)
    if result and result.groups(0):
            return True

    return False



#########################3 304
import re

def split_list(text):
    result = re.split("(\s*,\s*)|(:)", text)
    wynik = []
    for i in result:
        if i and re.match('\s*\w+\s*',i):
            wynik.append(i)

    return wynik

######################### 306
"""
>>> 153131%25
6
>>> 306 % 25
6
"""

import re

def is_power_of_hundred(text):
    if re.match("(^1)((00)*$)", text):
        return True
    return False