#include <iostream>
#include <random>

using namespace std;

int main() {
    random_device rd;
    mt19937 gen(rd());
    uniform_int_distribution<int> id(0, 3);
    for (int n = 10; n < 51; n++) {
        int cnt = 0;
        for (int i = 0; i < 1000000; i++) {
            int arr[4]{};
            for (int j = 0; j < n; j++) {
                arr[id(gen)]++;
            }
            if (arr[0] >= 2 && arr[1] >= 2 && arr[2] >= 3 && arr[3] >= 3) cnt++;
        }
        printf("%d개 %.3f%\n", n, (double) cnt / 10000);
    }
    return 0;
}