#include<bits/stdc++.h>
using namespace std;
int main () {
	int n;
	cin >> n;
	int s;
	int a[4] = {};
	for (int i = 1;i <= n ; i++) {
		cin >> s;
		if (s >= 0 && s <= 18) {
			a[0] ++;
		}
		else if (s >= 19 && s <= 35) {
			a[1] ++;
		}
		else if (s >= 36 && s <= 60) {
			a[2] ++;
		}
		else {
			a[3] ++;
		}
	}
    for (int i = 0; i < 4 ; ++i) {
    	cout << fixed << setprecision(2) <<(double)a[i] / n * 100 << "%" << endl;
	}
	return 0;
}