#include <iostream>
#include "mpi.h"

using namespace std;

int main(int argc, char** argv)
{

	MPI_Init(&argc, &argv);

		int size, rank;

		MPI_Status status;

		MPI_Comm_size(MPI_COMM_WORLD, &size);
		MPI_Comm_rank(MPI_COMM_WORLD, &rank);

		printf("i'm %d \n", rank);

	int* sendarray = new int[2];
	int* rbuf = new int[size * 2];
	int* displs = new int[size];
	int* rcounts = new int[size];
	int i;
	for (i = 0; i < size - 1; ++i) {
		displs[i] = i + i;
		rcounts[i] = 1;
	}
	i = size - 1;
	displs[i] = i + i;
	rcounts[i] = 2;
	sendarray[0] = rank + 1;
	sendarray[1] = rank + 2;
	if (rank != size - 1) printf("otpravl: %d", sendarray[0]);
	else printf("otpravl: %d %d", sendarray[0], sendarray[1]);
	double start_Send = MPI_Wtime();
	MPI_Gatherv(sendarray, rcounts[rank], MPI_INT, rbuf, rcounts, displs,
		MPI_INT, 0, MPI_COMM_WORLD);
	double end_Send = MPI_Wtime();

	if (rank == 0) {
		printf(" rezult:");
		for (int i = 0; i < size * 2; ++i) {
			if (rbuf[i] > 0)
				printf("%d", rbuf[i]);
			else printf("0");
		}
		printf(" vremya work %g", (end_Send - start_Send));
	}

	MPI_Finalize();
	return 0;
}