#include <iostream>
#include <cstdlib>
using namespace std;
 
int main()
{
int dg,gg,zbir=0,temp;
    cout<<"Interval od: ";
    cin>>dg;
    cout<<"Interval do: ";
    cin>>gg;
    if(dg>gg)
    {
    temp=dg;
    dg=gg;
    gg=temp;
    }
    for(int i=dg;i<=gg;i++)
    {
        zbir=zbir+i;
    }
    cout<<"Zbir je: "<<zbir<<endl;
    system("pause");
    return 0;
}