#include <iostream>
#include <vector>

#include "func.h"

int main() {
    size_t n; std::cin >> n;
    std::vector<int> v(n);
    for (size_t i = 0; i < n; ++i) {
        std::cin >> v[i];
    }
    print(n);
    std::cout << std::endl;
    print(v);
}