#include <iostream>
#include <fstream>
#include <cstring>
#include <string>
using namespace std;


int main(int ac,char const* av[])
{
  if(ac < 2){
	cerr << "Usage: eol_status [FILE]";
	return -1;
  }
  ifstream in(av[1],ios_base::binary);
  if(!in.is_open()){
	cerr << "Can't open file ``"<<av[1]<<"''\n";
	return -2;
  }

  int prev_char = EOF;
  int cur_char;

  int cr_count = 0;
  int lf_count = 0;
  int crlf_count = 0;
  while((cur_char = in.get()) != EOF){
	if(cur_char == 10){
	  if(prev_char == 13)
		++crlf_count;
	  else
		++lf_count;
    }
	else if(prev_char == 13)
      ++cr_count;
	prev_char = cur_char;
  }
  if(prev_char == 13)
	++cr_count;

  if(cr_count != 0 && lf_count == 0 && crlf_count == 0)
	cout << cr_count <<" ends of line are in CR\n";
  else if(cr_count == 0 && lf_count != 0 && crlf_count == 0)
	cout << lf_count <<" ends of line are in LF\n";
  else if(cr_count == 0 && lf_count == 0 && crlf_count != 0)
	cout << crlf_count <<" ends of line are in CRLF\n";
  else  if(cr_count == 0 && lf_count == 0 && crlf_count == 0)
	cout << "Zero end of line\n";
  else
	cout << "Inconsistent end of lines:\n\tCR count   = "<<cr_count
		 << "\n\tLF count   = "<<lf_count
		 << "\n\tCRLF count = "<<crlf_count
		 << "\n";

  return 0;
}