#include <iostream>
using namespace std;

int main()
{
    int i, j, n, sum = 0, tsum;
    cout << " Find the sum of the series (1) + (1+2) + (1+2+3) + (1+2+3+4) + ... + (1+2+3+4+...+n): ";
    cout << "------------------------------------------------------------------------------------------ ";
    cout << " Input the value for nth term: ";
    cin >> n;
    for (i = 1; i <= n; i++) 
    {
        tsum = 0;
        for (j = 1; j <= i; j++) 
        {
            sum += j;
            tsum += j;
            cout << j;
            if (j < i) 
            {
                cout << "+";
            }
        }
        cout << " = " << tsum << endl;
    }
    cout << " The sum of the above series is: " << sum << endl;
}