import java.io.BufferedReader; import java.io.InputStreamReader; public class Bugs { String str; String pred; String po; int n; while((str = br.readLine()) != null){ radek = str.split(" "); for (int i = 0; i < n; i++) { po = br.readLine(); do { po = po.replace(radek[1], ""); } while(pred.hashCode() != po.hashCode()); } } } }