FILE **files = malloc(sizeof(FILE *) * n);


	int cols = 3;
	int rows = n/cols;

    int files_index = 0;
 	for(int row_nr = 0; row_nr < rows; row_nr++) {
   		for(int i = row_nr; i < n; i += rows) {
   			files[files_index++] = fopen(nameArray[i],'r');
   		}
	}