ronantakizawa/codereview-bench huggingface dataset:
Repository: TheAlgorithms/C-Plus-Plus
File: backtracking/generate_parentheses.cpp (C++)

Code before:

    if ((str.length() == 2 * n) &&
        (closed != open)) {  // closed and open must be the same
        return;
    }

    if (str.length() == 2 * n) {
        res.push_back(str);
        return;
    }

    makeStrings(str + ')', n, closed + 1, open);
    makeStrings(str + '(', n, closed, open + 1);
}

/**
 * @brief wrapper interface
 *
 * @param n number of pairs of parentheses
 * @return all well-formed pattern of parentheses
 */
std::vector<std::string> backtracking::generate_parentheses::generate(int n) {
    backtracking::generate_parentheses::res.clear();
    std::string str = "(";
    backtracking::generate_parentheses::makeStrings(str, n, 0, 1);
    return res;
}

/**
 * @brief Self-test implementations
 * @returns void
 */
static void test() {
    int n;
    std::vector<std::string> patterns;
    backtracking::generate_parentheses p;

    n = 1;
    patterns = {{"()"}};
    assert(p.generate(n) == patterns);

    n = 3;
    patterns = {{"()()()"}, {"()(())"}, {"(())()"}, {"(()())"}, {"((()))"}};

    assert(p.generate(n) == patterns);

    n = 4;
    patterns = {{"()()()()"}, {"()()(())"}, {"()(())()"}, {"()(()())"},
                {"()((()))"}, {"(())()()"}, {"(())(())"}, {"(()())()"},
                {"(()()())"}, {"(()(()))"}, {"((()))()"}, {"((())())"},
                {"((()()))"}, {"(((())))"}};

Review comment (suggestion):
```suggestion
}
}  // namespace backtracking
```


Code after:
    if ((str.length() == 2 * n) &&
        (closed != open)) {  // closed and open must be the same
        return;
    }

    if (str.length() == 2 * n) {
        res.push_back(str);
        return;
    }

    makeStrings(str + ')', n, closed + 1, open);
    makeStrings(str + '(', n, closed, open + 1);
}

/**
 * @brief wrapper interface
 *
 * @param n number of pairs of parentheses
 * @return all well-formed pattern of parentheses
 */
std::vector<std::string> generate_parentheses::generate(int n) {
    backtracking::generate_parentheses::res.clear();
    std::string str = "(";
    generate_parentheses::makeStrings(str, n, 0, 1);
    return res;
}
}  // namespace backtracking

/**
 * @brief Self-test implementations
 * @returns void
 */
static void test() {
    int n = 0;
    std::vector<std::string> patterns;
    backtracking::generate_parentheses p;

    n = 1;
    patterns = {{"()"}};
    assert(p.generate(n) == patterns);

    n = 3;
    patterns = {{"()()()"}, {"()(())"}, {"(())()"}, {"(()())"}, {"((()))"}};

    assert(p.generate(n) == patterns);

    n = 4;
    patterns = {{"()()()()"}, {"()()(())"}, {"()(())()"}, {"()(()())"},
                {"()((()))"}, {"(())()()"}, {"(())(())"}, {"(()())()"},
                {"(()()())"}, {"(()(()))"}, {"((()))()"}, {"((())())"},
                {"((()()))"}, {"(((())))"}};
Repository: TheAlgorithms/C-Plus-Plus
File: backtracking/generate_parentheses.cpp (C++)

Code before:
void backtracking::generate_parentheses::makeStrings(std::string str, int n,
                                                     int closed, int open) {
    if (closed > open)  // We can never have more closed than open
        return;

    if ((str.length() == 2 * n) &&
        (closed != open)) {  // closed and open must be the same
        return;
    }

    if (str.length() == 2 * n) {
        res.push_back(str);
        return;
    }

    makeStrings(str + ')', n, closed + 1, open);
    makeStrings(str + '(', n, closed, open + 1);
}

/**
 * @brief wrapper interface
 *
 * @param n number of pairs of parentheses
 * @return all well-formed pattern of parentheses
 */
std::vector<std::string> backtracking::generate_parentheses::generate(int n) {
    backtracking::generate_parentheses::res.clear();
    std::string str = "(";
    backtracking::generate_parentheses::makeStrings(str, n, 0, 1);
    return res;
}

/**
 * @brief Self-test implementations
 * @returns void
 */
static void test() {
    int n;
    std::vector<std::string> patterns;
    backtracking::generate_parentheses p;

    n = 1;
    patterns = {{"()"}};
    assert(p.generate(n) == patterns);

    n = 3;
    patterns = {{"()()()"}, {"()(())"}, {"(())()"}, {"(()())"}, {"((()))"}};

    assert(p.generate(n) == patterns);

    n = 4;

Review comment (suggestion):
```suggestion
std::vector<std::string> generate_parentheses::generate(int n) {
```


Code after:
                                                     int closed, int open) {
    if (closed > open)  // We can never have more closed than open
        return;

    if ((str.length() == 2 * n) &&
        (closed != open)) {  // closed and open must be the same
        return;
    }

    if (str.length() == 2 * n) {
        res.push_back(str);
        return;
    }

    makeStrings(str + ')', n, closed + 1, open);
    makeStrings(str + '(', n, closed, open + 1);
}

/**
 * @brief wrapper interface
 *
 * @param n number of pairs of parentheses
 * @return all well-formed pattern of parentheses
 */
std::vector<std::string> generate_parentheses::generate(int n) {
    backtracking::generate_parentheses::res.clear();
    std::string str = "(";
    generate_parentheses::makeStrings(str, n, 0, 1);
    return res;
}
}  // namespace backtracking

/**
 * @brief Self-test implementations
 * @returns void
 */
static void test() {
    int n = 0;
    std::vector<std::string> patterns;
    backtracking::generate_parentheses p;

    n = 1;
    patterns = {{"()"}};
    assert(p.generate(n) == patterns);

    n = 3;
    patterns = {{"()()()"}, {"()(())"}, {"(())()"}, {"(()())"}, {"((()))"}};

    assert(p.generate(n) == patterns);

    n = 4;
Repository: TheAlgorithms/C-Plus-Plus
File: backtracking/generate_parentheses.cpp (C++)

Code before:
        return;

    if ((str.length() == 2 * n) &&
        (closed != open)) {  // closed and open must be the same
        return;
    }

    if (str.length() == 2 * n) {
        res.push_back(str);
        return;
    }

    makeStrings(str + ')', n, closed + 1, open);
    makeStrings(str + '(', n, closed, open + 1);
}

/**
 * @brief wrapper interface
 *
 * @param n number of pairs of parentheses
 * @return all well-formed pattern of parentheses
 */
std::vector<std::string> backtracking::generate_parentheses::generate(int n) {
    backtracking::generate_parentheses::res.clear();
    std::string str = "(";
    backtracking::generate_parentheses::makeStrings(str, n, 0, 1);
    return res;
}

/**
 * @brief Self-test implementations
 * @returns void
 */
static void test() {
    int n;
    std::vector<std::string> patterns;
    backtracking::generate_parentheses p;

    n = 1;
    patterns = {{"()"}};
    assert(p.generate(n) == patterns);

    n = 3;
    patterns = {{"()()()"}, {"()(())"}, {"(())()"}, {"(()())"}, {"((()))"}};

    assert(p.generate(n) == patterns);

    n = 4;
    patterns = {{"()()()()"}, {"()()(())"}, {"()(())()"}, {"()(()())"},
                {"()((()))"}, {"(())()()"}, {"(())(())"}, {"(()())()"},
                {"(()()())"}, {"(()(()))"}, {"((()))()"}, {"((())())"},

Review comment (suggestion):
```suggestion
    generate_parentheses::makeStrings(str, n, 0, 1);
```


Code after:

    if ((str.length() == 2 * n) &&
        (closed != open)) {  // closed and open must be the same
        return;
    }

    if (str.length() == 2 * n) {
        res.push_back(str);
        return;
    }

    makeStrings(str + ')', n, closed + 1, open);
    makeStrings(str + '(', n, closed, open + 1);
}

/**
 * @brief wrapper interface
 *
 * @param n number of pairs of parentheses
 * @return all well-formed pattern of parentheses
 */
std::vector<std::string> generate_parentheses::generate(int n) {
    backtracking::generate_parentheses::res.clear();
    std::string str = "(";
    generate_parentheses::makeStrings(str, n, 0, 1);
    return res;
}
}  // namespace backtracking

/**
 * @brief Self-test implementations
 * @returns void
 */
static void test() {
    int n = 0;
    std::vector<std::string> patterns;
    backtracking::generate_parentheses p;

    n = 1;
    patterns = {{"()"}};
    assert(p.generate(n) == patterns);

    n = 3;
    patterns = {{"()()()"}, {"()(())"}, {"(())()"}, {"(()())"}, {"((()))"}};

    assert(p.generate(n) == patterns);

    n = 4;
    patterns = {{"()()()()"}, {"()()(())"}, {"()(())()"}, {"()(()())"},
                {"()((()))"}, {"(())()()"}, {"(())(())"}, {"(()())()"},
                {"(()()())"}, {"(()(()))"}, {"((()))()"}, {"((())())"},
Repository: TheAlgorithms/C-Plus-Plus
File: backtracking/generate_parentheses.cpp (C++)

Code before:
 */
namespace backtracking {
/**
 * @brief generate_parentheses class
 */
class generate_parentheses {
 private:
    std::vector<std::string> res;  ///< Contains all possible valid patterns

    void makeStrings(std::string str, int n, int closed, int open);

 public:
    std::vector<std::string> generate(int n);
};
}  // namespace backtracking

/**
 * @brief function that implements backtracking
 *
 * @param str string build during backtracking
 * @param n number of pairs of parentheses
 * @param closed number of closed parentheses
 * @param open number of open parentheses
 */

void backtracking::generate_parentheses::makeStrings(std::string str, int n,
                                                     int closed, int open) {
    if (closed > open)  // We can never have more closed than open
        return;

    if ((str.length() == 2 * n) &&
        (closed != open)) {  // closed and open must be the same
        return;
    }

    if (str.length() == 2 * n) {
        res.push_back(str);
        return;
    }

    makeStrings(str + ')', n, closed + 1, open);
    makeStrings(str + '(', n, closed, open + 1);
}

/**
 * @brief wrapper interface
 *
 * @param n number of pairs of parentheses
 * @return all well-formed pattern of parentheses
 */
std::vector<std::string> backtracking::generate_parentheses::generate(int n) {

Review comment (suggestion):
```suggestion
void generate_parentheses::makeStrings(std::string str, int n,
```


Code after:
 */
namespace backtracking {
/**
 * @brief generate_parentheses class
 */
class generate_parentheses {
 private:
    std::vector<std::string> res;  ///< Contains all possible valid patterns

    void makeStrings(std::string str, int n, int closed, int open);

 public:
    std::vector<std::string> generate(int n);
};

/**
 * @brief function that adds parenthesis to the string.
 *
 * @param str string build during backtracking
 * @param n number of pairs of parentheses
 * @param closed number of closed parentheses
 * @param open number of open parentheses
 */

void generate_parentheses::makeStrings(std::string str, int n,
                                                     int closed, int open) {
    if (closed > open)  // We can never have more closed than open
        return;

    if ((str.length() == 2 * n) &&
        (closed != open)) {  // closed and open must be the same
        return;
    }

    if (str.length() == 2 * n) {
        res.push_back(str);
        return;
    }

    makeStrings(str + ')', n, closed + 1, open);
    makeStrings(str + '(', n, closed, open + 1);
}

/**
 * @brief wrapper interface
 *
 * @param n number of pairs of parentheses
 * @return all well-formed pattern of parentheses
 */
std::vector<std::string> generate_parentheses::generate(int n) {
    backtracking::generate_parentheses::res.clear();
Repository: TheAlgorithms/C-Plus-Plus
File: backtracking/generate_parentheses.cpp (C++)

Code before:

    n = 1;
    patterns = {{"()"}};
    assert(p.generate(n) == patterns);

    n = 3;
    patterns = {{"()()()"}, {"()(())"}, {"(())()"}, {"(()())"}, {"((()))"}};

    assert(p.generate(n) == patterns);

    n = 4;
    patterns = {{"()()()()"}, {"()()(())"}, {"()(())()"}, {"()(()())"},
                {"()((()))"}, {"(())()()"}, {"(())(())"}, {"(()())()"},
                {"(()()())"}, {"(()(()))"}, {"((()))()"}, {"((())())"},
                {"((()()))"}, {"(((())))"}};
    assert(p.generate(n) == patterns);

    std::cout << "All tests passed\n";
}

/**
 * @brief Main function
 * @returns 0 on exit
 */
int main() {
    test();
    return 0;
}


Review comment (suggestion):
```suggestion
    test();  // run self-test implementations
```


Code after:

    n = 1;
    patterns = {{"()"}};
    assert(p.generate(n) == patterns);

    n = 3;
    patterns = {{"()()()"}, {"()(())"}, {"(())()"}, {"(()())"}, {"((()))"}};

    assert(p.generate(n) == patterns);

    n = 4;
    patterns = {{"()()()()"}, {"()()(())"}, {"()(())()"}, {"()(()())"},
                {"()((()))"}, {"(())()()"}, {"(())(())"}, {"(()())()"},
                {"(()()())"}, {"(()(()))"}, {"((()))()"}, {"((())())"},
                {"((()()))"}, {"(((())))"}};
    assert(p.generate(n) == patterns);

    std::cout << "All tests passed\n";
}

/**
 * @brief Main function
 * @returns 0 on exit
 */
int main() {
    test();  // run self-test implementations
    return 0;
}
Repository: TheAlgorithms/C-Plus-Plus
File: backtracking/generate_parentheses.cpp (C++)

Code before:
 */

#include <cassert>   /// for assert
#include <iostream>  /// for I/O operation
#include <vector>    /// for vector container

/**
 * @brief Backtracking algorithms
 * @namespace backtracking
 */
namespace backtracking {
/**
 * @brief generate_parentheses class
 */
class generate_parentheses {
 private:
    std::vector<std::string> res;  ///< Contains all possible valid patterns

    void makeStrings(std::string str, int n, int closed, int open);

 public:
    std::vector<std::string> generate(int n);
};

/**
 * @brief function that implements backtracking
 *
 * @param str string build during backtracking
 * @param n number of pairs of parentheses
 * @param closed number of closed parentheses
 * @param open number of open parentheses
 */

void generate_parentheses::makeStrings(std::string str, int n,
                                                     int closed, int open) {
    if (closed > open)  // We can never have more closed than open
        return;

    if ((str.length() == 2 * n) &&
        (closed != open)) {  // closed and open must be the same
        return;
    }

    if (str.length() == 2 * n) {
        res.push_back(str);
        return;
    }

    makeStrings(str + ')', n, closed + 1, open);
    makeStrings(str + '(', n, closed, open + 1);
}

Review comment (suggestion):
```suggestion
 * @brief function that adds parenthesis to the string.
```
This is a bit of a nitpick but I think the documentation here is a bit less informative  

Code after:
 */

#include <cassert>   /// for assert
#include <iostream>  /// for I/O operation
#include <vector>    /// for vector container

/**
 * @brief Backtracking algorithms
 * @namespace backtracking
 */
namespace backtracking {
/**
 * @brief generate_parentheses class
 */
class generate_parentheses {
 private:
    std::vector<std::string> res;  ///< Contains all possible valid patterns

    void makeStrings(std::string str, int n, int closed, int open);

 public:
    std::vector<std::string> generate(int n);
};

/**
 * @brief function that adds parenthesis to the string.
 *
 * @param str string build during backtracking
 * @param n number of pairs of parentheses
 * @param closed number of closed parentheses
 * @param open number of open parentheses
 */

void generate_parentheses::makeStrings(std::string str, int n,
                                                     int closed, int open) {
    if (closed > open)  // We can never have more closed than open
        return;

    if ((str.length() == 2 * n) &&
        (closed != open)) {  // closed and open must be the same
        return;
    }

    if (str.length() == 2 * n) {
        res.push_back(str);
        return;
    }

    makeStrings(str + ')', n, closed + 1, open);
    makeStrings(str + '(', n, closed, open + 1);
}
Repository: TheAlgorithms/C-Plus-Plus
File: math/eulers_totient_function.cpp (C++)

Code before:
/**
 * @file
 * @brief Implementation of [Euler's Totient](https://en.wikipedia.org/wiki/Euler%27s_totient_function)
 * @description
 * Euler's Totient is also known as the phi function hence the name in the code.
 * Equation:
 * φ(n) = Πp|n (1 - 1/p)
 * @author [Mann Mehta](https://github.com/mann2108)
 */

#include <iostream> // for io operations
#include <cassert> // for assert

namespace math {

/**
 * @brief Function to calculate Euler's Totient
 * @param n is the number to find the Euler's Totient of.
 */
uint64_t phiFunction(uint64_t n) {
    uint64_t result = n;
    for (uint64_t i = 2; i * i <= n; i++) {
        if (n % i != 0) continue;
        while (n % i == 0) n /= i;

        result -= result / i;
    }
    if (n > 1) result -= result / n;

    return result;
}
} // namespace math

/**
 * @brief Self-test implementations
 * @returns void
 */
static void test() {
    assert(math::phiFunction(1) == 1);
    assert(math::phiFunction(2) == 1);

Review comment (suggestion):
```suggestion
/**
 * @brief Mathematical algorithms
 * @namespace
 */
namespace math {
```


Code after:
/**
 * @file
 * @brief Implementation of [Euler's Totient](https://en.wikipedia.org/wiki/Euler%27s_totient_function)
 * @description
 * Euler Totient Function is also known as phi function.
 * \f[\phi(n) =
 * \phi\left({p_1}^{a_1}\right)\cdot\phi\left({p_2}^{a_2}\right)\ldots\f] where
 * \f$p_1\f$, \f$p_2\f$, \f$\ldots\f$ are prime factors of n.
 * <br/>3 Euler's properties:
 * 1. \f$\phi(n) = n-1\f$
 * 2. \f$\phi(n^k) = n^k - n^{k-1}\f$
 * 3. \f$\phi(a,b) = \phi(a)\cdot\phi(b)\f$ where a and b are relative primes.
 *
 * Applying this 3 properties on the first equation.
 * \f[\phi(n) =
 * n\cdot\left(1-\frac{1}{p_1}\right)\cdot\left(1-\frac{1}{p_2}\right)\cdots\f]
 * where \f$p_1\f$,\f$p_2\f$... are prime factors.
 * Hence Implementation in \f$O\left(\sqrt{n}\right)\f$.
 * <br/>Some known values are:
 * * \f$\phi(100) = 40\f$
 * * \f$\phi(1) = 1\f$
 * * \f$\phi(17501) = 15120\f$
 * * \f$\phi(1420) = 560\f$
 * @author [Mann Mehta](https://github.com/mann2108)
 */

#include <iostream> /// for IO operations
#include <cassert> /// for assert

/**
 * @brief Mathematical algorithms
 * @namespace
 */
namespace math {
/**
 * @brief Function to calculate Euler's Totient
 * @param n the number to find the Euler's Totient of
 */
uint64_t phiFunction(uint64_t n) {
    uint64_t result = n;
Repository: TheAlgorithms/C-Plus-Plus
File: math/eulers_totient_function.cpp (C++)

Code before:
 * 3. \f$\phi(a,b) = \phi(a)\cdot\phi(b)\f$ where a and b are relative primes.
 *
 * Applying this 3 properties on the first equation.
 * \f[\phi(n) =
 * n\cdot\left(1-\frac{1}{p_1}\right)\cdot\left(1-\frac{1}{p_2}\right)\cdots\f]
 * where \f$p_1\f$,\f$p_2\f$... are prime factors.
 * Hence Implementation in \f$O\left(\sqrt{n}\right)\f$.
 * <br/>Some known values are:
 * * \f$\phi(100) = 40\f$
 * * \f$\phi(1) = 1\f$
 * * \f$\phi(17501) = 15120\f$
 * * \f$\phi(1420) = 560\f$
 * @author [Mann Mehta](https://github.com/mann2108)
 */

#include <iostream> // for io operations
#include <cassert> // for assert

/**
 * @brief Mathematical algorithms
 * @namespace
 */
namespace math {
/**
 * @brief Function to calculate Euler's Totient
 * @param n is the number to find the Euler's Totient of.
 */
uint64_t phiFunction(uint64_t n) {
    uint64_t result = n;
    for (uint64_t i = 2; i * i <= n; i++) {
        if (n % i != 0) continue;
        while (n % i == 0) n /= i;

        result -= result / i;
    }
    if (n > 1) result -= result / n;

    return result;
}
}  // namespace math

/**
 * @brief Self-test implementations
 * @returns void
 */
static void test() {
    assert(math::phiFunction(1) == 1);
    assert(math::phiFunction(2) == 1);
    assert(math::phiFunction(10) == 4);
    assert(math::phiFunction(123456) == 41088);
    assert(math::phiFunction(808017424794) == 263582333856);

Review comment (suggestion):
```suggestion
 * @param n the number to find the Euler's Totient of
```


Code after:
 * 3. \f$\phi(a,b) = \phi(a)\cdot\phi(b)\f$ where a and b are relative primes.
 *
 * Applying this 3 properties on the first equation.
 * \f[\phi(n) =
 * n\cdot\left(1-\frac{1}{p_1}\right)\cdot\left(1-\frac{1}{p_2}\right)\cdots\f]
 * where \f$p_1\f$,\f$p_2\f$... are prime factors.
 * Hence Implementation in \f$O\left(\sqrt{n}\right)\f$.
 * <br/>Some known values are:
 * * \f$\phi(100) = 40\f$
 * * \f$\phi(1) = 1\f$
 * * \f$\phi(17501) = 15120\f$
 * * \f$\phi(1420) = 560\f$
 * @author [Mann Mehta](https://github.com/mann2108)
 */

#include <iostream> /// for IO operations
#include <cassert> /// for assert

/**
 * @brief Mathematical algorithms
 * @namespace
 */
namespace math {
/**
 * @brief Function to calculate Euler's Totient
 * @param n the number to find the Euler's Totient of
 */
uint64_t phiFunction(uint64_t n) {
    uint64_t result = n;
    for (uint64_t i = 2; i * i <= n; i++) {
        if (n % i != 0) continue;
        while (n % i == 0) n /= i;

        result -= result / i;
    }
    if (n > 1) result -= result / n;

    return result;
}
}  // namespace math

/**
 * @brief Self-test implementations
 * @returns void
 */
static void test() {
    assert(math::phiFunction(1) == 1);
    assert(math::phiFunction(2) == 1);
    assert(math::phiFunction(10) == 4);
    assert(math::phiFunction(123456) == 41088);
    assert(math::phiFunction(808017424794) == 263582333856);
Repository: TheAlgorithms/C-Plus-Plus
File: math/eulers_totient_function.cpp (C++)

Code before:
uint64_t phiFunction(uint64_t n) {
    uint64_t result = n;
    for (uint64_t i = 2; i * i <= n; i++) {
        if (n % i != 0) continue;
        while (n % i == 0) n /= i;

        result -= result / i;
    }
    if (n > 1) result -= result / n;

    return result;
}
}  // namespace math

/**
 * @brief Self-test implementations
 * @returns void
 */
static void test() {
    assert(math::phiFunction(1) == 1);
    assert(math::phiFunction(2) == 1);
    assert(math::phiFunction(10) == 4);
    assert(math::phiFunction(123456) == 41088);
    assert(math::phiFunction(808017424794) == 263582333856);
    assert(math::phiFunction(3141592) == 1570792);
    assert(math::phiFunction(27182818) == 12545904);
}

/**
 * @brief Main function
 * @param argc commandline argument count (ignored)
 * @param argv commandline array of arguments (ignored)
 * @returns 0 on exit
 */
int main(int argc, char *argv[]) {
    test();
    return 0;
}


Review comment (suggestion):
```suggestion
    assert(math::phiFunction(27182818) == 12545904);

    std::cout << "All tests have successfully passed!\n";
```


Code after:
uint64_t phiFunction(uint64_t n) {
    uint64_t result = n;
    for (uint64_t i = 2; i * i <= n; i++) {
        if (n % i != 0) continue;
        while (n % i == 0) n /= i;

        result -= result / i;
    }
    if (n > 1) result -= result / n;

    return result;
}
}  // namespace math

/**
 * @brief Self-test implementations
 * @returns void
 */
static void test() {
    assert(math::phiFunction(1) == 1);
    assert(math::phiFunction(2) == 1);
    assert(math::phiFunction(10) == 4);
    assert(math::phiFunction(123456) == 41088);
    assert(math::phiFunction(808017424794) == 263582333856);
    assert(math::phiFunction(3141592) == 1570792);
    assert(math::phiFunction(27182818) == 12545904);

    std::cout << "All tests have successfully passed!\n";
}

/**
 * @brief Main function
 * @param argc commandline argument count (ignored)
 * @param argv commandline array of arguments (ignored)
 * @returns 0 on exit
 */
int main(int argc, char *argv[]) {
    test();
    return 0;
}