#include <bits/stdc++.h>

using namespace std;

void nhapMaTran(int n, int m) {
	int a;
	ofstream ofs("MATRIX.txt");
	ofs<<n<<" "<<m<<"\n";
	for (int i = 0; i < n; i++) {
		for (int j = 0; j < m; j++) {
			cout<<"Nhap a["<<i<<","<<j<<"]: "; cin>>a;
			ofs<<a<<" ";
		}
		ofs<<"\n";
	}
	ofs.close();
}

void docMaTran(int a[][100], int &n, int &m) {
	ifstream ifs("MATRIX.txt");
	ifs>>n;
	ifs>>m;
	for (int i = 0; i < n; i++) {
		for (int j = 0; j < m; j++) {
			ifs>>a[i][j];
		}
	}
	ifs.close();
}

void inMaTran(int a[][100], int n, int m) {
	for (int i = 0; i < n; i++) {
		for (int j = 0; j < m; j++) {
			cout<<"\t"<<a[i][j];
		}
		cout<<endl;
	}
	cout<<endl;
}

int main() {
	int n, m;
	int a[100][100];
	cout<<"Nhap n: "; cin>>n;
	cout<<"Nhap m: "; cin>>m;
	nhapMaTran(n, m);
	docMaTran(a, n, m);
	inMaTran(a, n, m);
	return 0;
}