#include <iostream>
using namespace std;
int main() {
float a = 12;
float b = 14;
float c = 18;
float srednia = (a + b + c) / 3;
cout << srednia;
return 0;
}
I2luY2x1ZGUgPGlvc3RyZWFtPgp1c2luZyBuYW1lc3BhY2Ugc3RkOwoKaW50IG1haW4oKSB7CgkJZmxvYXQgYSA9IDEyOwoJZmxvYXQgYiA9IDE0OwoJZmxvYXQgYyA9IDE4OwoJZmxvYXQgc3JlZG5pYSA9IChhICsgYiArIGMpIC8gMzsKCWNvdXQgPDwgc3JlZG5pYTsKCXJldHVybiAwOwp9