#include <iostream>
using namespace std;
int main() {
int n, i, sum = 0, term = 1, nextTerm;
cout << "Enter the value of n: "; cin >> n;
cout << "The series is: ";
for (i = 1; i <= n; i++) {
cout << term << " ";
sum += term;
nextTerm = term + i;
term = nextTerm;
}
cout << "\nThe sum of the series is: " << sum << endl;
return 0;
}