import Foundation

typealias Color = Character

func readInput(_ filePath: String) throws -> ([[Color]], [[Color]]) {
    let content = try String(contentsOfFile: filePath, encoding: .ascii)
    let lines = content.split(separator: "\n")
    let towels = lines[0].split(separator: ", ").map(Array.init)
    let patterns = lines[1..<lines.count].map(Array.init)
    return (towels, patterns)
}

var cache: [[Color]: Bool] = [[]: true]
func canMatch(_ pattern: [Color], _ towels: [[Color]]) -> Bool {
    if let cached = cache[pattern] {
        return cached
    }
    for towel in towels {
        if pattern.starts(with: towel) {
            if canMatch(Array(pattern[towel.count..<pattern.count]), towels) {
                cache[pattern] = true
                return true
            }
        }
    }
    cache[pattern] = false
    return false
}

let (towels, patterns) = try readInput(CommandLine.arguments[1])
print(patterns.filter { canMatch($0, towels) }.count)