int checkBit = 1 << ((int)(log(size) / log(2)) - (iteration + 1));

		if (! (rank & checkBit)) {
			// TODO Select main in group
			MPI_Recv(&addSize, 1, MPI_INT, rank ^ checkBit, 1000, MPI_COMM_WORLD, MPI_STATUS_IGNORE);
			MPI_Recv(&(subArray[mySize]), addSize, MPI_INT, rank ^ checkBit, 1000, MPI_COMM_WORLD, MPI_STATUS_IGNORE);

			int partLength = mySize + addSize;

			int less = 0;
			int greater = partLength - 1;

			while (less <= greater) {
				if (subArray[less] >= pivot) {
					int buf = subArray[less];
					subArray[less] = subArray[greater];
					subArray[greater] = buf;
					greater--;
				} else {
					less++;
				}
			}

			sendSize = partLength - less;
			MPI_Send(&sendSize, 1, MPI_INT, rank ^ checkBit, 1000, MPI_COMM_WORLD);
			MPI_Send(&(subArray[less]), sendSize, MPI_INT, rank ^ checkBit, 1000, MPI_COMM_WORLD);

			sendSize = less;
		} else {
			MPI_Send(&mySize, 1, MPI_INT, rank ^ checkBit, 1000, MPI_COMM_WORLD);
			MPI_Send(subArray, mySize, MPI_INT, rank ^ checkBit, 1000, MPI_COMM_WORLD);
			MPI_Recv(&sendSize, 1, MPI_INT, rank ^ checkBit, 1000, MPI_COMM_WORLD, MPI_STATUS_IGNORE);
			MPI_Recv(subArray, sendSize, MPI_INT, rank ^ checkBit, 1000, MPI_COMM_WORLD, MPI_STATUS_IGNORE);
			cout << rank << "/" << size << " (" << localRank << "/" << localSize << ") size = " << mySize << ": ";
		}