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

main (int argc, char *argv[]) {

  int i, bin;
  double sum[515], intens;
  char file_name[100];
  FILE *infile, *prf_files, *out_file;

  prf_files = fopen("prf_files.txt","r");

  for (i = 0; i < 515; i++) {
    sum[i] = 0;
  }

  while (!feof(prf_files)) {

    fscanf(prf_files,"%s\n",&file_name);
    infile = fopen(file_name,"r");

    for (i = 0; i < 512; i++) {
      fscanf(infile,"%d %lf\n",&bin,&intens);
      sum[i] += intens;
    }

    fclose(infile);

  }

  fclose(prf_files);

  out_file = fopen("profile.txt","w");

  for (i = 0; i < 512; i++) {
    fprintf(out_file,"%d %lf\n",i,sum[i]);
  }

}