#include <math.h>
#include <iostream>
#include <conio.h>
#include <vector>
#include <string>

using namespace std;

double sr(const vector<size_t>& bins) {
    size_t totalHeight = 0;
    for (size_t bin : bins) {
        totalHeight += bin;
    }

    return static_cast<double>(totalHeight) / bins.size();
}