#include <stdio.h>
#include <stdlib.h>

void istog(char *in,int n){
  double min,max,a,dx;
  int nexlud,i,ntot=0;
  int *isto;
  FILE *input;
  min=1e+99;
  max=1e-99;
  input=fopen(in,"r");
  isto = (int *) calloc(n,sizeof(int));
  if (input==NULL) {
    fprintf(stderr,"error in input\n");
    return;
  }
  nexlud=0;
#ifdef _MAXMIN
  fprintf(stderr,"insert min and max:\n");
  scanf("%lf %lf",&min,&max);
  while (fscanf(input,"%lf",&a)!=EOF){
    if ((min<=a)&&(max>=a)) ntot++;
    else nexlud++;
  }
  ntot+=nexlud;
#endif
#ifndef _MAXMIN
    while (fscanf(input,"%lf",&a)!=EOF){
      ntot++;
      if (min>=a) min=a;
      if (max<=a) max=a;
    }
#endif
  fprintf(stderr,"done, data are in [%lf,%lf]\n",min,max);
  fflush(stderr);
  dx =(max-min)/n;
  rewind(input);
  for(i=0; i<ntot; i++){
    fscanf(input,"%lf",&a);
    if ((min<=a)&&(max>=a))	isto[(int) ((a-min)/dx)]++; 
    //else fprintf(stderr,"out %lf\n",a );
  }
  for (i=0; i<n; i++){
    fprintf(stdout,"%lf %i\n",min + (i+0.5)*dx, (isto[i])); ///(dx*ntot));
  }
  fprintf(stderr,"scarti %lf%\n",((double)nexlud)/((double)ntot)*100.);
  return;
}

int main(int argc, char**argv){
  if (argc!=3){
    fprintf(stderr,"\nInsert inputfile, Nofboxes\n\n");
    exit(0);
  }
  istog(argv[1],atoi(argv[2]));
  
  return 0;
}