#include <bits/stdc++.h>
using namespace std;
int main(){
	double L,R,V,Q,C;
	cin>>L>>R>>V;
	Q=L*R;
	C=(L+R)*V;
	cout<<"Q:"<<Q<<endl<<"C:"<<C;
}	
/**************************************************************
	Problem: 1958
	User: toughuatao1
	Language: C++
	Result: Accepted
	Time:16 ms
	Memory:2072 kb
****************************************************************/