#include "stdafx.h"
#include <iostream>

int main()
{
    const int boatCount = 35;
    double arr[boatCount], sum = 0, smallest = DBL_MAX;
    int count = 0;
    for (int i = 0; i < boatCount; i++)
    {
        std::cin >> arr[i];
        sum += arr[i];
        count += arr[i] >= 450 && arr[i] <= 1250;
        if (smallest > arr[i])
        {
            smallest = arr[i];
        }
    }

    std::cout << count << std::endl;
    for (int i = 0; i < boatCount; i++)
    {
        if (arr[i] == smallest)
        {
            std::cout << i << ' ';
        }
    }

    double avg = sum / boatCount;
    std::cout << std::endl << avg << std::endl;
    return 0;
}