if WA on #1

ll query(char ch[], int len) {
  int nowp = 1; ll ret = 0;
  for (int i = 1; i <= len; i++) {
    while (!t[nowp].son[Int(ch[i])] && nowp > 1) nowp = t[nowp].fail;
    if (!t[nowp].son[Int(ch[i])]) continue;
    nowp = t[nowp].son[Int(ch[i])];
    //if (t[nowp].cnt) {
      int tmp = nowp;
      while (tmp > 1) {
        total[id[tmp]] += t[tmp].cnt;
        ret = std::max(ret, (ll)total[id[tmp]]);
        tmp = t[tmp].fail;
      }
    //}
  }
  return ret;
}