Day20.cpp

#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
#include <string>
using namespace std;
class AdvancedArithmetic{
    public:
        virtual int divisorSum(int n)=0;
};
class Calculator : public AdvancedArithmetic {
public:
    int divisorSum(int n) {
        int i;
        int sum=0;
        for(i=1;i<=n;i++)
        {
            if(n%i==0)
            {
                sum=sum+i;
            }
        }
        return sum;
    }
};

int main(){
    int n;
    cin >> n;
    AdvancedArithmetic *myCalculator = new Calculator(); 
    int sum = myCalculator->divisorSum(n);
    cout << "I implemented: AdvancedArithmetic\n" << sum;
    return 0;
}