#include<iostream>
#include<fstream>
using namespace std;

ifstream in("input.txt");
ofstream out("output.txt");

int findScal(int** arr, int rowsNum, int columnNum, int j)
{
    j = j-1;
    int result = 0;
    for(int i = 0; i < rowsNum; ++i)
    {
        result += arr[i][0]*arr[i][j];
    }
    return result;
}

int findSum(int** arr, int rowsNum, int columnNum)
{
    int result = 0;
    for(int i = 0, j = 0; i < rowsNum-1; ++i, ++j)
    {
        result += arr[i+1][j];
    }
    return result;
}

void outputMax(int** arr, int rowsNum, int columnNum)
{
    for(int i = 0; i < rowsNum; ++i)
    {
        int max = arr[i][0];
        int maxPos = 1;
        for(int j = 0; j < columnNum; ++j)
        {
            if(arr[i][j] > max)
            {
                max = arr[i][j];
                maxPos = j + 1;
            }
        }
        out << "The biggest element of row " << i + 1 << " is " << max << " with positoin " << maxPos << endl;
    }
}

int main()
{
    int rowsNum;
    int columnNum;
    in >> rowsNum >> columnNum;
    int** arr = new int*[rowsNum];
    for(int i = 0; i < rowsNum; ++i)
    {
        arr[i] = new int[columnNum];
    }
    for(int i = 0; i < rowsNum; ++i)
    {
        for(int j = 0; j < columnNum; ++j)
        {
            in >> arr[i][j];
        }
    }
    int inputedJ;
    in >> inputedJ;
    for(int i = 0; i < rowsNum; ++i)
    {
        for(int j = 0; j < columnNum; ++j)
        {
            out << arr[i][j] << " ";
        }
        out << endl;
    }
    out << endl << "2.a)The scalar of first and " << inputedJ << " column of matrix is " << findScal(arr, rowsNum, columnNum, inputedJ) << endl;
    out << "2.b) The sum of the element of diagonal under the main is " << findSum(arr, rowsNum, columnNum) << endl;
    out << "2.c)";
    outputMax(arr, rowsNum, columnNum);
}




________________________________________________________________
input.txt
4 4
1 4 3 4
4 3 2 1
15 16 17 18
18 17 16 15
4

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