/***************************************************************
 *
 *  This program is an example of some two dimensional array
 *  operations. The array is declared to have 5 rows and 6
 *  columns. The values for 4 rows and 5 columns are input,
 *  one row per line (ie., a rowwise operation), from standard
 *  input. Then the 6th element in each row is defined to be
 *  the average of the first 5 elements in each row (a rowwise
 *  operation), and the 5th row is defined to be the average of 
 *  the first 4 elements in ach column (a columnwise operation).
 *  Then the entire array is output, one row per line (a rowwise
 *  operation.
 *
 ***************************************************************/
#include <iostream>
using namespace std;

int main ()
  {
   float arr[5][6];
   float sum;
   int i, j;

   // Input the array (except for the last row and column)

   for(i = 0; i < 4; i++)
      cin >> arr[i][0] >> arr[i][1] >> arr[i][2] >> arr[i][3] >> arr[i][4];

   // Note: we could also use a second (inner) loop to do this

   // Now calculate the sum of each row, then store the average in column 5.

   for(i = 0; i < 4; i++)
     {
      sum = 0.0;
      for(j = 0; j < 5; j++)
        sum += arr[i][j];
      arr[i][5] = sum / 5.;
     } // END for i
   
   // Sum the columns, put average in row 5
   // NOTE: We are adding up the last column (the average of the rows)
 
   for(j = 0; j < 6; j++)
     {
      sum = 0.0;
      for(i = 0; i < 4; i++)
         sum += arr[i][j];
      arr[4][j] = sum / 4.;
     } // END for j

   // Now output the entire array, including averages. 

   for(i = 0; i < 5; i++)  
     {
      for(j = 0; j < 6; j++)
         cout << arr[i][j] << ' ';
      cout << endl;
     } // END for i      
 

  } // END main