C++ код к задаче напишите пожалуйста

 #include  
#include  
#include  
#include  
#include  
#include  
#include  
#include  
#define RAND(min, max) (rand() % ((max) - (min)) + (min)) 
using namespace std; 
using T = int; 
size_t count(const char* prompt, size_t mn, size_t mx) { 
    size_t value = -1; 
    while (value < mn || value > mx) { 
        cout << prompt; 
        cin >> value; 
        cin.ignore(0x1000, '\n'); 
    } 
    return value; 
} 
void fill_random(vector>& mx, const size_t n, const size_t m, T a, T b) { 
    if (a > b) swap(a, b); 
    uniform_int_distribution uid(a, b); 
    mt19937 gen{ random_device()() }; 
    for (size_t i = 0; i < n; ++i) { 
        for (size_t j = 0; j < m; ++j) mx[i][j] = uid(gen); 
    } 
} 
void show(const vector>& mx, const size_t n, const size_t m, const streamsize w) { 
    for (size_t i = 0; i < n; ++i) { 
        for (size_t j = 0; j < m; ++j) cout << ' ' << setw(w) << mx[i][j]; 
        puts(""); 
    } 
    puts(""); 
} 
static void resize(size_t& n, size_t& m, const size_t h, const size_t w) { 
    n = count("N: ", h, w); 
    m = count("M: ", h, w); 
} 
void add_with_number(vector>& mx, const size_t n, const size_t m, T number) { 
    for (size_t i = 0; i < n; ++i) { 
        for (size_t j = 0; j < m; ++j) mx[i][j] += number; 
    } 
} 
void multiply_by_number(vector>& mx, const size_t n, const size_t m, T number) { 
    for (size_t i = 0; i < n; ++i) { 
        for (size_t j = 0; j < m; ++j) mx[i][j] *= number; 
    } 
} 
T max_element(vector>& mx, const size_t n, const size_t m) { 
    T x = numeric_limits::min(); 
    for (size_t i = 0; i < n; ++i) { 
        for (size_t j = 0; j < m; ++j) if (mx[i][j] > x) x = mx[i][j]; 
    } 
    return x; 
} 
void show_submatrix(vector>& mx, const size_t ii, const size_t jj, const size_t n, const size_t m, const streamsize w) { 
    for (size_t i = ii; i < n; ++i) { 
        for (size_t j = jj; j < m; ++j) cout << ' ' << setw(w) << mx[i][j]; 
        puts(""); 
    } 
    puts(""); 
} 
int main() { 
    srand(static_cast(time(nullptr))); 
    constexpr size_t h = 10; 
    constexpr size_t w = 1000; 
    vector> mx(w, vector(w)); 
    auto n = count("N: ", h, w); 
    auto m = count("M: ", h, w); 
    T a = 10; 
    T b = 99; 
    fill_random(mx, n, m, a, b); 
    auto width = static_cast(log10(b) + 1); 
    show(mx, n, m, width); 
    cout << "Resize:\n"; 
    resize(n, m, h, w); 
    show(mx, n, m, width); 
    cout << "Number for sum: "; 
    T number{}; 
    cin >> number; 
    add_with_number(mx, n, m, number); 
    width = static_cast(log10(max_element(mx, n, m)) + 1); 
    show(mx, n, m, width); 
    cout << "Number for multiply: "; 
    cin >> number; 
    multiply_by_number(mx, n, m, number); 
    width = static_cast(log10(max_element(mx, n, m)) + 1); 
    show(mx, n, m, width); 
    auto ii = count("Start row: ", 0, n); 
    auto jj = count("Start column: ", 0, m); 
    auto nn = count("Last row: ", ii, n); 
    auto mm = count("Last column: ", jj, m); 
    show_submatrix(mx, ii, jj, nn, mm, width);  
}