/// find the sum of the elemnts at row= x
// x is given from the user, should be less than m
/// find the average of the elements ot column y
/// where y is given from the user, should be less than n

#include<iostream>
using namespace std;
int main()
{
	int m,n,i,j,x,y;
	int s=0;
	float avg;
	cout<<"Enter the number of row and columns:\n";
	cin>>m>>n;

	int a[m][n];
	cout<<"Enter the elements of the matrix\n";

	for(i=0;i<m;i++)
	for(j=0;j<n;j++)
	cin>>a[i][j];

	cout<<"Enter number of row and number of column y: \n";
	cin>>x>>y;


	         if(x>=m || y>=n)
             {
             	cout<<"x shoulde be less than m and y should be less than n";
             	return 0;
			 }

     	for (j=0;j<n;j++)
     	s+=a[x][j];

     	cout<<"The sum of the elements at row"<<x << " is "<< s;

     	int s1=0;
     	for(i=0; i<m; i++)
     	s1+=a[i][y];

     	avg=s1/m;
     	cout <<"The average of the elements at column"<<y<<avg;
  }