import java.io.BufferedReader; import java.io.InputStreamReader; public class bugs { /** * @param args */ String s, bug; int n, pos, len; while (true) { s = br.readLine(); if (s == null) break; pos = s.indexOf(" "); bug = s.substring(pos + 1); for (int i = 0; i < n; i++) { s = br.readLine(); do { len = s.length(); s = s.replace(bug, ""); } while (len != s.length()); } } } }