#!/usr/bin/env python3
# -*- coding: utf-8 -*-
from functools import lru_cache

file = "./input.txt"
#file = "./ex.txt"
#file = "./input-e.txt"
from time import time
start_time = time()

def read_input(input_file:str, ) -> tuple[list[str], list[str]]:
    a = []
    d = []
    f = open(input_file, "r")
    for line in f:
        line = line.strip()
        if line == "":
            continue
        elif "," in line:
            a = line.replace(" ","").split(",")
        else:
            d.append(line)
    f.close()
    return a, d

@lru_cache(maxsize=None)
def check_design(txt: str) -> bool:
    global alphabet
    if txt == "":
        return True
    for substring in alphabet:
        if txt.startswith(substring):
            remaining = txt[len(substring):]
            if check_design(remaining):
                return True
    return False


if __name__ == "__main__":
    alphabet, designs = read_input(file)
    alphabet.sort(reverse=True)
    sol = 0
    for i, design in enumerate(designs):
        #print(i, design)
        if check_design(design):
            sol += 1
    print(sol)

    print(f'Runtime: {time()-start_time:.8f} s')