#include <bits/stdc++.h> using namespace std; int main() { printf("%.3lf\n", (5.0 + 8.0 + 12.0) / 3.0); cout << 38 / 5 << " " << 38 % 5 << endl; cout << 38 / 8 << " " << 38 % 8 << endl; cout << 38 / 12 << " " << 38 % 12 << endl; }