#include <cstdio> using namespace std; int main() { int a,b,c,d; double e,f; scanf("%d %d %lf",&a,&b,&e); scanf("%d %d %lf",&c,&d,&f); double z=b*e+d*f; printf("VALOR A PAGAR: R$ %.2lf\n",z); return 0; }