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#include <iostream>
#include <fstream>

std::ifstream f("bac.txt");

int main(){

    int m, n, a[100][100];

    f >> m >> n;
    int minim, maxim, linMax, linMin;


    for (int i = 0; i < m; i++)
        for(int j = 0; j < n; j++) {

            f >> a[i][j];

            if (i == 0 && j == 0)
                minim = maxim = a[i][j];

            else {
                if (a[i][j] < minim) {
                    minim = a[i][j];
                    linMin = i;}

                if (a[i][j] > maxim) {
                    maxim = a[i][j];
                    linMax = i;}
            }

        }


    for(int i = 0; i < n; i++)
        std::swap(a[linMin][i], a[linMax][i]);

    for(int i = 0; i < m; i++) {
        for(int j = 0; j < n; j++)

            std::cout << a[i][j] << " ";

        std::cout << "\n";
    }
}