/*
 * Age Statistics, E.Hehner, 1997 Sep.3
 * modified by Alan Rosenthal, Oct 2000
 *
 * Standard input is a sequence of numbers representing people's ages.
 * (E.g. if five people are 18 years old, "18" appears five times in the
 * input.)  Output states the maximum age, average age, and most common age.
 */

#include <stdio.h>

int main()
{
    int count[120];  /* count[x] is count of people who are x years old */
    int i, a;
    int inputsize, mostcommon, total, max;

    /* initialize whole array to zero */
    for (i = 0; i < 120; i++)
        count[i] = 0;

    /* read ages, count histogram info */
    while (scanf("%d", &a) != EOF) {
        if (a < 0 || a >= 120)
            printf("Age %d ignored.\n", a);
        else
            count[a]++;
    }

    /* calculate totals and max */
    /* note that mostcommon starts off as indicating count[0], which is ok */
    inputsize = mostcommon = total = 0;
    max = -1;
    for (i = 0; i < 120; i++) {
        inputsize += count[i];
        total += i * count[i];
        if (count[i] > count[mostcommon])
            mostcommon = i;
        if (count[i] != 0)
            max = i;
    }
    if (inputsize > 0)
        printf("The average age is %g, the most common age is %d, "
               "and the maximum age is %d.\n",
               total / (double)inputsize, mostcommon, max);

    return 0;
}