#include <iostream>
#include <iomanip>
using namespace std;

int main() {
    double a,b;
    cin >> a >> b ;
    // cout << "5: " << fixed << setprecision(5) << a/b << endl;
    // cout << "4: " << fixed << setprecision(4) << a/b <<endl;
    // cout << "3: " << fixed << setprecision(3) << a/b <<endl;
    // cout << "2: " << fixed << setprecision(2) << a/b <<endl;
    // cout << "1: " << fixed << setprecision(1) << a/b <<endl;

    cout << "5: "  << setprecision(5) << a/b << endl;
    cout << "4: "  << setprecision(4) << a/b <<endl;
    cout << "3: "  << setprecision(3) << a/b <<endl;
    cout << "2: "  << setprecision(2) << a/b <<endl;
    cout << "1: "  << setprecision(1) << a/b <<endl;


    
    return 0;
}