#include <bits/stdc++.h>
using namespace std;

void plusMinus(vector<int> arr) {
    int n = arr.size(), pos = 0, neg = 0, zero = 0;
    for (int x : arr) pos += x > 0, neg += x < 0, zero += x == 0;
    cout << fixed << setprecision(6) << (double)pos / n << endl << (double)neg / n << endl << (double)zero / n << endl;
}

int main() {
    int n; cin >> n;
    vector<int> arr(n);
    for (int i = 0; i < n; i++) cin >> arr[i];
    plusMinus(arr);
    return 0;
}