#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;
	cout<<"C:"<<C<<endl;
    return 0;
}
/**************************************************************
	Problem: 1958
	User: xiaojingxuan
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/