#include <iostream>
#include <string>
using namespace std;

/*
--------------------------------------------------------------------
| Observând output-ul programului, realizăm că toate șirurile      |
| sunt periodice, unele fiind eventual periodice.                  |
| Perioada minimă este 2, iar cea maximă este, practic, infinită.  |
--------------------------------------------------------------------
*/

void generate_random_numbers(int number) {
	string auxiliary = "";
	string number_array = to_string(number) + ", ";
	int count = 20;
	cout << "\nFor a count of 20, we get the following numbers: " << endl;
	while (count) {
		if (number < 4)
		{
			auxiliary = "000" + to_string(number * number);
		}
		else if (number >= 4 && number < 10)
		{
			auxiliary = "00" + to_string(number * number);
		}
		else if (number < 31)
		{
			auxiliary = "0" + to_string(number * number);
		}
		else if (number >= 31) {
			auxiliary = to_string(number * number);
		}
		number = stoi(auxiliary.substr(1, 2));
		number_array = number_array + to_string(number) + ", ";
		count--;
	}
	cout << number_array << endl;
}

int main(int argc, char const **argv) {
	for (int i = 10; i < 100; ++i) {
		generate_random_numbers(i);
	}

	system("pause");
	return 0;
}