#include <iostream>

void solve() {
    int k;
    std::cin >> k;

    int p = k / 100, q = k % 100;

    std::cout << p + 101 << "\n";

    while (p--) std::cout << "2 ";
    std::cout << "4 ";

    for (int i = 0; i < 100; ++i) {
        std::cout << (i < q ? 3 : 5) << " ";
    }
    std::cout << "\n";
}

int main() {
    std::cin.tie(nullptr);
    std::ios::sync_with_stdio(false);

    solve();

    return 0;
}