#include <iostream>
#include <cstdlib>
#include <iomanip>

using namespace std;


int main()
{
    int array, *row;
    int n, m, i,j, ansi, maxx, maxy, minx, miny;
    bool ans = false;
    cout << "n= ";
    cin >> n;

    cout << "m= ";
    cin >> m;

    array = (int)malloc(n * sizeof(int*));
    row = (int*)malloc(m * sizeof(int));

    int max1 = -1000, max2 = -1000, min = 1000, sum = 0;

    for (i = 0; i < n; i++)
    {
        array[i] = (int*)malloc(m * sizeof(int));

        for (j = 0; j < m; j++) {
            array[i][j] = rand() % 200 - 100;
            cout << setw(5) << array[i][j];

            sum += array[i][j];

            if (array[i][j] > max1) {
                max2 = max1;
                max1 = array[i][j];
                maxx = i;
                maxy = j;
            }

            if (array[i][j] < min) {
                min = array[i][j];
                minx = i;
                miny = j;
            }
        }
        cout << endl;
    }

    for (i = 0; i < n; i++) {
        bool frst = false, sec = false;

        for (j = 0; j < m; j++) {
            if (array[i][j] == max1) {
                if (frst)
                    sec = true;
                frst = true;
            }
        }

        if (frst && sec) {
            ans = true;
            ansi = i;
        }
    }

    cout << endl << "# 1" << endl << endl;

    cout << "Max value " << max1 << endl;

    if (ans) {
        cout << "Row with two max values " << ansi << endl;
    }
    else {
        cout << "No row with two max values" << endl;
    }

    cout << endl << "# 2" << endl << endl;

    cout << "SUM of all: " << sum << endl;
    cout << "Count of all: " << n * m << endl;
    cout << "AVG of all: " << (float)sum / n / m << endl;
    cout << "Min " << min << endl;
    cout << "Max " << max1 << endl;
    cout << "AVG of min and max " << (min + max1) / 2 << endl;
    cout << "Answer: " << (float)sum / n / m - (min + max1) / 2 << endl;

    cout << endl << "# 3" << endl << endl;

    int minrowsum = 1000000000000, maxrow = -1000, minrowi = 0;

    for (i = 0; i < n; i++) {
        int s = 0;
        for (j = 0; j < m; j++) {
            s += array[i][j];
        }
        if (s < minrowsum) {
            minrowsum = s;
            minrowi = i;
        }
    }

    for (j = 0; j < m; j++) {
        if (maxrow < array[minrowi][j])
            maxrow = array[minrowi][j];
    }

    cout << "Min sum row " << minrowi << endl;
    cout << "Max value in min sum row " << maxrow << endl;

    cout << endl << "# 4" << endl << endl;

    bool forth = false;

    for (j = 0; j < m; j++) {
        bool col = true;
        for (i = 1; i < n; i++) {
            if (array[i][j] == array[i - 1][j]) {
                col = true;
                break;
            }
        }
        if (col) {
            forth = true;
            break;
        }
    }

    if (forth){
        cout << "There is column with all equal values " << j << endl;
    } else {
        cout << "There is no column with all equal values" << endl;
    }

    cout << endl << "# 5" << endl << endl;

    ans = false;

    for (i = 0; i < n; i++) {
        int c = 0;
        for (j = 0; j < m; j++) {
            if (array[i][j] < 0) {
                c++;
            }
        }
        if (c == 2) {
            ans = true;
            break;
        }
    }

    if (ans) {
        cout << "There is row with 2 neg values " << i << endl;
    }
    else {
        cout << "There is no row with 2 neg values" << endl;
    }

    cout << endl << "# 6" << endl << endl;

    ans = false;

    for (i = 0; i < n; i++) {
        int n = 0, p = 0;
        for (j = 0; j < m; j++) {
            if (array[i][j] < 0) {
                n++;
            }
            if (array[i][j] > 0) {
                p++;
            }
        }
        if (p > n) {
            ans = true;
            break;
        }
    }

    if (ans) {
        cout << "There is row with more pos values " << i << endl;
    }
    else {
        cout << "There is no row with more pos values" << endl;
    }

Адиль, [28.10.2022 13:21]
cout << endl << "# 7" << endl << endl;

    int maxrowsum = -1000, maxi=0, mina = 1000;

    for (i = 0; i < n; i++) {
        int s = 0;
        for (j = 0; j < m; j++) {
            s += array[i][j];
        }
        if (s > maxrowsum) {
            maxrowsum = s;
            maxi = i;
        }
    }

    for (j = 0; j < m; j++) {
        if (mina> array[maxi][j])
            mina = array[maxi][j];
    }

    cout << "Max sum row " << maxi << endl;
    cout << "Min abs " << mina << endl;

    cout << endl << "# 8" << endl << endl;

    ans = false;

    for (j = 0; j < m; j++) {
        int n = 0, p = 0;
        for (i = 0; i < n; i++) {
            if (array[i][j] < 0) {
                n++;
            }
            if (array[i][j] > 0) {
                p++;
            }
        }
        if (p == n) {
            ans = true;
            break;
        }
    }

    if (ans) {
        cout << "There is column with equal pos and neg values " << j << endl;
    }
    else {
        cout << "There is no column with equal pos and neg values " << endl;
    }

    cout << endl << "# 9" << endl << endl;
    ans = false;

    cout << "Rows with only pos values: " << endl;

    for (i = 0; i < n; i++) {
        int p = 0;
        int maxvrow = -1000;
        for (j = 0; j < m; j++) {
            if (array[i][j] > 0) {
                p++;
            }
            if (maxvrow < array[i][j]) {
                maxvrow = array[i][j];
            }
        }
        if (p == m) {
            cout << "Row: " << i << endl;
            cout << "Max in this row: " << maxvrow << endl;
            ans = true;
        }
    }

    if (!ans) {
        cout << "No rows";
    }

    cout << endl << "# 10" << endl << endl;

    int sf = 0, sl = 0;
    for (i = 0; i < n; i++) {
        sf += array[i][0];
        sl += array[i][m-1];
    }

    int sfc = 0, slc = 0;
    for (j = 0; j < m; j++) {
        sfc += array[0][j];
        slc += array[n-1][j];
    }

    cout << "AVG of first row " << (float)sf / n << endl;
    cout << "AVG of last row " << (float)sl / n << endl;
    cout << "AVG of first column " << (float)sfc / m << endl;
    cout << "AVG of last column " << (float)slc / m << endl;

    cout << endl << "# 11" << endl << endl;

    int maxabs = max1;
    if (abs(maxabs) < abs(min))
        maxabs = min;

    for (i = 0; i < n; i++)
    {
        for (j = 0; j < m; j++) {
            cout << setw(10) << (float)array[i][j] / maxabs;
        }
        cout << endl;
    }

    cout << endl << "# 12" << endl << endl;

    int starti, startj, endi, endj;

    if (maxx < minx) {
        starti = maxx;
        startj = maxy;

        endi = minx;
        endj = miny;
    }
    else {
        endi = maxx;
        endj = maxy;

        starti = minx;
        startj = miny;
    }

    int s = 0;

    for (i = 0; i < n; i++) {
        for (j = 0; j < m; j++) {
            if ((i > starti && i < endi)
                (i == starti && j >= startj)
                (i == endi && j <= startj))
                s += array[i][j];
        }
    }

    cout << "Sum of elements that is between min and max value " << s << endl;

    cout << endl << "# 13" << endl << endl;

    int anses[1000], id=0;

    for (i = 0; i < n; i++)
    {
        for (j = 0; j < m; j++) {
            int v = rand() % 100;
            cout << setw(5) << v;

            if (v == i * j) {
                anses[id++] = v;
            }
        }
        cout << endl;
    }

    for (i = 0; i < id; i++) {
        cout << anses[i] << " ";
    }

    cout << endl << "# 14" << endl << endl;

    int* sumcols, * sumrows;

    sumcols = (int*)malloc(m * sizeof(int));
    sumrows = (int*)malloc(n * sizeof(int));

    for (i = 0; i < m; i++) {
        sumcols[i] = 0;
    }
    for (i = 0; i < n; i++) {
        sumrows[i] = 0;
    }

    for (i = 0; i < n; i++)
    {
        for (j = 0; j < m; j++) {
            sumrows[i] += array[i][j];
            sumcols[j] += array[i][j];
        }
    }

Адиль, [28.10.2022 13:21]
int mincol=0, maxrowi=0;
    for (i = 0; i < m; i++) {
        if (sumcols[i] < sumcols[mincol])
            mincol = i;
    }
    for (i = 0; i < n; i++) {
        if (sumrows[i] > sumrows[maxrowi])
            maxrowi = i;
    }

    cout << "Max row " << maxrowi << endl;
    cout << "Min col " << mincol << endl;

    cout << endl << "# 15" << endl << endl;

    for (i = 0; i < n; i++)
    {
        int minrows = 0, maxrows = 0, temp;
        for (j = 0; j < m; j++) {
            if (array[i][maxrows] < array[i][j]) {
                maxrows = j;
            }
        }
        temp = array[i][maxrows];
        array[i][maxrows] = array[i][m-1];
        array[i][m-1] = temp;
    }


    for (i = 0; i < n; i++)
    {
        int minrows = 0, maxrows = 0, temp;
        for (j = 0; j < m; j++) {
            if (array[i][minrows] > array[i][j]) {
                minrows = j;
            }
        }

        temp = array[i][minrows];
        array[i][minrows] = array[i][0];
        array[i][0] = temp;
    }


    for (i = 0; i < n; i++)
    {
        for (j = 0; j < m; j++) {
            cout << setw(5) << array[i][j];
        }
        cout << endl;
    }
}