#include <cstdlib>
#include <iostream>
#include <sstream>
#include <string>

std::string seq_to_str(int start, int end) {
    std::ostringstream out;
    out << "[";
    for (int count = start; count < end; ++count) {
        out << count;
        if (count < end - 1) {
            out << ", ";
        }
    }
    out << "]";
    return out.str();
}

int main() {
    std::cout << seq_to_str(1, 10) << "\n";
    return EXIT_SUCCESS;
}