#include "stdio.h"
long fun(int d,int n)
{
/**********Program********/
/********** End **********/
}
main()
{ int d,n;
long sum,fun(int d, int n);
scanf("%d%d",&d,&n);
sum=fun(d,n);
printf("sum=%ld\n",sum);
}
#include "stdio.h"
long fun(int d,int n)
{
/**********Program********/
/********** End **********/
}
main()
{ int d,n;
long sum,fun(int d, int n);
scanf("%d%d",&d,&n);
sum=fun(d,n);
printf("sum=%ld\n",sum);
}
#include "stdio.h"
long fun(int d, int n)
{
int i;
long dn, adn, sum;
sum = adn = dn = d;
for (i = 2; i <= n; ++i)
{
dn *= d;
adn += dn;
sum += adn;
}
return sum;
}
int main()
{
int d, n;
long sum;
scanf("%d%d", &d, &n);
sum = fun(d, n);
printf("sum = %ld\n", sum);
return 0;
}
// Output
5 3
sum = 190