# coding:utf-8

n = 5  # Число строк
m = 6  # Число столбцов

import random
import os

class matrix:
    def __init__(self):
        self.n = int(raw_input("Number of lines: "))
        self.m = int(raw_input("Number of columns: "))
        self.m_min = int(raw_input("Minimum number: "))
        self.m_max = int(raw_input("Maximum number: "))
        # TODO: reprove max > min
        self.a = [[random.randint(self.m_min, self.m_max) for j in range(self.m)] for i in range(self.n)]

    def print_matrix(self):
        print(self.a)

    # function add elements from 1 matrix to another
    def __add__(self, other):
        # other.print_matrix()
        m_res = []
        for i in range(len(self.a)):
            for j in range(len(other.a[i])):
                self.a[i].append(other.a[i][j])

    # TODO: function form list of all elements of matrix
    def summon(self):
        pass

    # TODO: function exchange columns
    def exchange_columns(self):
        """
        Function exchange columns
        :return: 
        """
        #os.system('cls')
        m = []  # result matrix
        #x = int(raw_input("Number of column: "))
        n1 = int(raw_input("Number of column: "))
        n1 = n1 + 1                         # just for user understand right
        if n1 > len(self.a[0]) or n1 < 0:
            print("Number of lines not in range of lines matrix")
            input()
            return
        n2 = int(raw_input("Number of column: "))
        n2 = n2 + 1                         # just for user understand right
        if n2 > len(self.a[0]) or n2 < 0:
            print("Number of lines not in range of lines matrix")
            input()
            return
        for i in range(len(self.a)):
            m.append(list())
            for j in range(len(self.a[0])):
                if j == n1:
                    # TODO: need to create list - mistake yet
                    m[i].append(self.a[i][n2])
                    continue
                if j == n2:
                    m[i].append(self.a[i][n1])
                    continue
                m[i].append(self.a[i][j])
        self.a = m

    
    def exchange_rows(self):
        """
        Function exchange rows
        :return: 
        """
        #os.system('cls')
        m = []  # result matrix
        n1 = int(raw_input("Number of line: "))
        n1 = n1 + 1                         # just for user understand right
        if n1 > len(self.a) or n1 < 0:
            print("Number of lines not in range of lines matrix")
            input()
            return
        n2 = int(raw_input("Number of line: "))
        n2 = n2 + 1                         # just for user understand right
        if n2 > len(self.a) or n2 < 0:
            print("Number of lines not in range of lines matrix")
            input()
            return
        for i in range(len(self.a)):
            m.append(list())
            if i == n1:
                m[i].append(self.a[n2])
                continue
            if i == n2:
                m[i].append(self.a[n1])
                continue
            m[i].append(self.a[i])
        self.a = m


if __name__ == '__main__':
    m = matrix()
    m.print_matrix()
    #m.exchange_columns()
    m.exchange_rows()
    m.print_matrix()