package main

import (
    "fmt"
    "regexp"
    "strings"
    "os"
)

func check(err error) {
    if err != nil { panic(err) }
}

func main() {
    dat, err := os.ReadFile("data.txt")
    check(err)
    input := strings.TrimSpace(string(dat))
    
    towels   := strings.Split(input, "\n\n")[0]
    towels    = strings.Replace(towels, ", ", "|", -1)
    patterns := strings.Split(input, "\n\n")[1]
    
    r := regexp.MustCompile("^(" + towels + ")+$")

    counter := 0
    for _, line := range strings.Split(patterns, "\n") {
        if r.MatchString(line) { counter++ }
    }

    fmt.Println(counter)
}