13. Number Pyramid

#include <iostream>
using namespace std;

int main() {
    int number;
    cin >> number;

    int current_num = 1;
    int row = 1;
    while (current_num <= number)
    {
        for (size_t i = 0; i < row; i++)
        {
            if (current_num > number)
            {
                break;
            }
            cout << current_num << " ";
            current_num++;
        }
        row++;
        cout << endl;
    }
}