void plusMinus(vector<int> arr) {
    double countp = 0, countn = 0, countz = 0;
    for(int i = 0; i < arr.size(); i++) {
        if(arr[i] > 0) {
            countp++;
        } else if(arr[i] < 0) {
            countn++;
        } else {
            countz++;
        }
    }
    vector<double> v;
    v.push_back(countp);
    v.push_back(countn);
    v.push_back(countz);
    for (int i = 0; i < v.size(); i++) {
        cout << double(v[i]/arr.size()) << endl;
    }
}

def plusMinus(arr):
    print("%.6f"%(len([x for x in arr if x > 0]) / len(arr)))
    print("%.6f"%(len([x for x in arr if x < 0]) / len(arr)))
    print("%.6f"%(len([x for x in arr if x == 0]) / len(arr)))

def plusMinus(arr):
    pos=0
    neg=0
    zero=0
    for i in arr:
        if i>0:
            pos+=1
        elif i<0:
            neg+=1
        else:
            zero+=1
    print(round((pos/len(arr)),6))
    print(round((neg/len(arr)),6))
    print(round((zero/len(arr)),6))     
            
    
    
    
    
n=int(input().strip())
arr=list(map(int, input().rstrip().split()))
plusMinus(arr)    

function plusMinus($arr) {
    // Write your code here
    $total = count($arr);
    
    $positive = 0;
    $nagetive = 0;
    $zero = 0;
    
    foreach($arr as $val){
        if($val == 0){
            $zero++;
        }elseif($val > 0){
            $positive++;
        }elseif($val < 0){
            $nagetive++;
        }
    }
    
    print_r($positive/$total);
    print_r("\n");
    print_r($nagetive/$total);
    print_r("\n");
    print_r($zero/$total);

}