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


int main(int argc, char **argv)
{
    int status;
    FILE *fp;
    extern int process(FILE *fp);

    status = 0;
    if (argc == 1) {
	status += process(stdin);
    } else {
	for (argv++; --argc > 0; argv++) {
	    if (strcmp(*argv, "-") == 0) {
		status += process(stdin);
	    } else {
		if ((fp = fopen(*argv, "r"))) {
		    status += process(fp);
		    fclose(fp);
		} else {
		    perror(*argv);
		}
	    }
	}
    }
    exit(status);
}


int process(FILE *fp)
{
    long freq[256];
    int c;

    for (c = 0; c < 256; c++)
	freq[c] = 0;
    while ((c = getc(fp)) != EOF)
	freq[c]++;

    for (c = 0; c < 256; c++) {
	if (freq[c]) {
	    if (isprint(c))
		printf("%c: %ld\n", c, freq[c]);
	    else
		printf("0%o: %ld\n", c, freq[c]);
	}
    }

    return(0);
}