#include "testlib.h"
#include <bits/stdc++.h>

using namespace std;

const int MIN_N = 1;
const int MAX_N = 1e3;
const int MIN_NI = 1;
const int MAX_NI = 1e4;

const int rnd_test_n = 40;

template <typename T>
void append(vector<T> &dest, const vector<T> &orig)
{
    dest.insert(dest.end(), orig.begin(), orig.end());
}

string output_tc(const vector<int> &nums)
{
    ostringstream oss;
    oss << nums.size() << endl;
    for (int i = 0; i < nums.size(); i++)
    {
        if (i != 0)
            oss << " ";
        oss << nums[i];
    }
    oss << endl;
    return oss.str();
}

vector<string> generate_sample_tests()
{
    vector<string> tests;
    tests.push_back(output_tc({1, 5, 8, 9, 10, 17, 17, 20}));
    tests.push_back(output_tc({1, 2, 3, 5}));
    tests.push_back(output_tc({3, 5, 8, 9, 10, 17, 17, 20}));
    return tests;
}

vector<string> generate_manual_tests()
{
    vector<string> tests;
    tests.push_back(output_tc({MIN_NI, MIN_NI, MIN_NI, MIN_NI}));
    return tests;
}

string rnd_test(int i)
{
    int min_n = MIN_N;
    int max_n = MAX_N;

    if (i < rnd_test_n / 3)
    {
        max_n = MAX_N / 3;
    }
    else if (i < rnd_test_n / 2)
    {
        max_n = MAX_N / 2;
    }

    int n = rnd.next(min_n, max_n);
    vector<int> nums(n);

    nums[0] = 10;
    for (int j = 1; j < n; j++)
    {
        int length = j + 1;
        
        int choice = rnd.next(0, 100);

        if (choice < 20) {
            nums[j] = nums[j-1] + rnd.next(1, nums[0] - 1);
        }
        else if (choice < 80) {
            int offset = rnd.next(-2, 3); 
            nums[j] = nums[j-1] + nums[0];
        } 
        else {
            nums[j] = nums[j-1] + nums[0] + rnd.next(5, 15);
        }

        nums[j] = min(nums[j], MAX_NI);
    }
    return (output_tc(nums));
}

vector<string> generate_random_tests()
{
    vector<string> tests;
    for (int i = 0; i < rnd_test_n; i++)
    {
        tests.push_back(rnd_test(i));
    }
    return tests;
}

string extreme_test_1()
{
    vector<int> nums(MAX_N);
    for (int i = 0; i < MAX_N; i++)
    {
        nums[i] = MIN_NI;
    }
    return (output_tc(nums));
}

string extreme_test_2()
{
    vector<int> nums(MAX_N);
    for (int i = 0; i < MAX_N; i++)
    {
        nums[i] = MAX_NI;
    }
    return (output_tc(nums));
}

vector<string> generate_extreme_tests()
{
    vector<string> tests;
    tests.push_back(extreme_test_1());
    tests.push_back(extreme_test_2());
    return tests;
}

int main(int argc, char *argv[])
{
    registerGen(argc, argv, 1);
    vector<string> tests;
    size_t test = 0;
    append(tests, generate_sample_tests());
    append(tests, generate_manual_tests());
    append(tests, generate_random_tests());
    append(tests, generate_extreme_tests());
    for (const auto &t : tests)
    {
        startTest(++test);
        cout << t;
    }
    return 0;
}