TablitsoOOP.java

class Main {
      Tablitsa tabl = new Tablitsa();
      int find(int i, int j){
          return tabl.getRecord(i).getColumn(j);
      }
  }

  class Tablitsa {
      List<Record> records = new ArrayList<>();

      Record getRecord(int recordId) {
          return records.get(recordId);
      }
  }

  class Record {
      List<Integer> columns = new ArrayList<>();

      int getColumn(int col) {
          return columns.get(col);
      }
  }