#include <iostream.h>
using namespace std;
class Addition {
public:
int sum(int num1,int num2) {
return num1+num2;
}
int sum(int num1,int num2, int num3) {
return num1+num2+num3;
}
};
int main(void) {
Addition obj;
cout<<obj.sum(20, 15)<<endl;
cout<<obj.sum(81, 100, 10);
return 0;
}