using System;
using System.IO;

class Scan {
    static int Count(byte[] hay, byte[] needle) {
        int n = 0;
        for (int i = 0; i + needle.Length <= hay.Length; i++) {
            bool m = true;
            for (int j = 0; j < needle.Length; j++) if (hay[i + j] != needle[j]) { m = false; break; }
            if (m) n++;
        }
        return n;
    }
    static void Main(string[] args) {
        string dir = args[0];
        string[] pats = { "AECH", "AERE", "AEREP", "Claim", "challenge" };
        foreach (string f in Directory.GetFiles(dir, "*.dll")) {
            byte[] b = File.ReadAllBytes(f);
            string hits = "";
            foreach (string p in pats) {
                byte[] a = System.Text.Encoding.ASCII.GetBytes(p);
                byte[] u = System.Text.Encoding.Unicode.GetBytes(p);
                int ca = Count(b, a), cu = Count(b, u);
                if (ca > 0 || cu > 0) hits += string.Format(" {0}(ascii={1},utf16={2})", p, ca, cu);
            }
            if (hits.Length > 0) Console.WriteLine(Path.GetFileName(f) + ":" + hits);
        }
        Console.WriteLine("scan done");
    }
}