Untitled

#include <iostream>
using namespace std;
int cost(int A, int N, int M, int S, int B) 
{
	int costdom;
	costdom = S * B;
	int costzemlya;
	costzemlya = N * M * A;
	int itog;
	itog = costdom + costzemlya;
	return itog;
}
int main()
{
	int A, N, M, S, B;
	cin >> A>> N>>M>>S>>B;
	cout << cost(A, N, M, S, B);
}