# include <cstdlib>
# include <iostream>

using namespace std;

int main ( )
//
//  MONA is a "partial" program which the student is to complete.
//  It reads a PGM graphics file containing COLS x ROWS pixel values,
//  which are actually integers between 0 and 255.
//
//  The program should be run with commands like:
//
//    g++ mona.cpp
//    mv a.out mona
//    ./mona < mona.pgm
//
//  The program should be completed so that it counts the number of pixels
//  in the 16 ranges 0 to 15, 16 to 31, 32 to 47, ..., 240 to 255,
//  and prints these results out.
//
//  The results should confirm that the image is rather dark (most of the
//  pixel values are closer to 0 (black) than 255 (white).
//
{
  char c1, c2;
  int c, cols, g, g_max, r, rows;
//
//  1) Your declarations and initializations go here!
//     ---------------------------------------------
//
  DECLARATIONS and INITIALIZATIONS
//
//  This part of the code reads some initial data from the graphics file.
//
  cin >> c1;
  cin >> c2;
  cin >> cols;
  cin >> rows;
  cin >> g_max;
//
//  This part of the code reads ROWS * COLS values of G, the 
//  amount of gray in each pixel.
//
  for ( r = 0; r < rows; r++ )
  {
    for ( c = 0; c < cols; c++ )
    {
      cin >> g;
//
//  2) Update the appropriate counter based on the value of G
//     ------------------------------------------------------
//
//  G is a gray scale value between 0 and 255.
//
//  We have 16 counters, each for a range of 16 values.
//
//  Update the appropriate counter:
//
//  COUNT[0]:    0 <= G <  16
//  COUNT[1]:   16 <= G <  32
//  ...
//  COUNT[15]: 240 <= G < 256
//
//  You could use 16 IF/ELSE statements, but there's a simple formula
//  that will tell you immediately which counter should be updated.
//
      DETERMINE THE INDEX OF THE COUNTER TO UPDATE.
      UPDATE THAT COUNTER.
    }
  }
//
//  3) Print out your counter values here!
//     ----------------------------------
//
  PRINT THE COUNTERS.

  return 0;
}