#include <iostream>
    using namespace std;
    class Example
    {
        private:
        int p, q;
        public:
        void test()
        {
            p = 150;
            q = 250;
        }
        friend int Calculate(Example Exmp1);
    };
    int Calculate(Example Exmp1)
    {
        return int(Exmp1.p + Exmp1.q) - 5;
    }
    int main()
    {
        Example obj;
        obj.test();
        cout  << Calculate(obj);
        return 0;
    }