#include <vector>
 
typedef std::vector<long> Long1;
typedef std::vector<Long1> Long2D;
 
void split(Long2D& arr, Long2D& arrL, Long2D& arrR, long median, long size)
{   
    for (long i = 0; i < size -1; i++)
    {
        if (i <= median){   //split data in half by x coord 
            arrL.at(i).at(0) = arr[i][0]; //x
            arrL.at(i).at(1) = arr[i][1]; //y
        }else{
            arrR.at(i).at(0) = arr[i][0];
            arrR.at(i).at(0) = arr[i][1];
        }
    }
}
 
int main()
{
	int median = 10;
	int size = median;
    Long2D arr(median + 1, Long1(1));
    Long2D arrL(median + 1, Long1(1));
    Long2D arrR(median + 1, Long1(1));
    split(arr, arrL, arrR, median, size);   
}

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