#include <iostream>
#include <string>
#include <random>
 
int main(int argc, const char *argv[])
{
    for (int i=0; i < 5; ++i) {
        uint_fast32_t seed = argc > 1 ? std::atoi(argv[1]) : 2;
        std::mt19937 generator{seed};
        std::uniform_int_distribution<int> dist(0, 999);
        std::cout << "Iteration: " << i + 1 << "===========\n";
        for (int j = 0; j < 20; ++j) {
            std::cout << dist(generator) << ' ';
        }
        std::cout << '\n';
    }
 
    return 0;
}
 

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