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

int main() {
	float x [6][6];

	int i,j,M,N;
	cout<<"Upisite dimenzije niza"<<endl;
	do {
		cout<<"Unesite broj redova: ";
		cin>>N;
		cout<<"Unesite broj kolona: ";
		cin>>M;
	} while ((N>6)||(M>6));

	for (i=0;i<N;i++){
		cout<<"Unesite elemente niza"<<endl;
		for (j=0;j<M;j++){
			cout<<"x["<<i<<","<<j+1<<"]=";
			cin>>x[i][j];
		}

	}
	cout<<"Niz je ucitan"<<endl;
	cout<<"Upisali ste niz"<<endl;
	for (i=0;i<N;i++){
		for(j=0;j<M;j++){
			cout<<setw(6)<<x[i][j];
		}
		cout<<endl;
	}
		cout<<"Elementi na glavnoj dijagonali su:"<<endl;
	for (i=0;i<N;i++){
		cout<<x[i][i];
		cout<<endl;
	}

	return 0;
}