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

/**
 * Auto-generated code below aims at helping you parse
 * the standard input according to the problem statement.
 **/

int main()
{
    int M;
    scanf("%d", &M); fgetc(stdin);

    int T[100][15] = {{0}};
    float TC = 0;
    float TC2 = 0;

    fprintf(stderr, "M=%d\n", M);

    int d = 0;
    for (int i = 0; i < M; i++) {
        char LINE[45];
        fgets(LINE, 45, stdin);

        char *p = LINE;
        int k = 0;
        int n;
        int s = 0;
        while (sscanf(p, "%d %n" , &T[i - d][k], &n) == 1) {
            p += n;
            s += T[i - d][k];
            k += 1;
        }

        if (s == 0)
            d += 1;
    }

    M -= d;

    for (int k = 0; k < M; k += 1) {
        fprintf(stderr, "T[%d] = [", k);
        for (int j = 0; j < 15; j += 1) {
            fprintf(stderr, "%d%s", T[k][j], j == 14 ? "" : ", ");
        }
        fprintf(stderr, "]\n", k);
    }



    for (int k = 0; k < M; k += 1) {
        float s = 0;
        for (int j = 0; j < 15; j += 1) {
            s += T[k][j];
        }
        TC += 10 + (s - 40) / 7;
    }

    int k = 0;
    float s = 0;
    int m = M * 15;
    if (m % 2 == 1)
        m -= 1;

    while (k < m) {
        s += T[k / 15][k % 15];
        if (k % 2 == 0)
            s += 5;
        k += 1;
    }

    fprintf(stderr, "total = %f\n", TC / M);


    printf("%0.1f\n", TC / M);
    if (TC / M >= 5 && TC / M <= 30)
        printf("%.1f\n", s / m * 2);

    return 0;
}