#include<bits/stdc++.h>
#define f first
#define s second
#define pb push_back
using namespace std;
typedef pair<int,int> pii;
typedef long long ll;
const long long INF = 1000000000000000000ll;




int wspolczynnik(int i, int j) {
	if((i + j) % 2 == 0) return 1;
	else return -1;
}

double** matrix(int n, int m) {
	double** tab = new double*[n];
	for(int i = 0; i < n; i++)
		tab[i] = new double[m];
	return tab;
}

double** odetnij(double** A, int n, int a, int b) {
	double** ans = matrix(n-1,n-1);
	for(int i = 0; i < a-1; i++)
		for(int j = 0; j < b-1; j++)
			ans[i][j] = A[i][j];
	for(int i = 0; i < a-1; i++)
		for(int j = b-1; j < n-1; j++)
			ans[i][j] = A[i][j+1];
	for(int i = a-1; i < n-1; i++)
		for(int j = 0; j < b-1; j++)
			ans[i][j] = A[i+1][j];
	for(int i = a-1; i < n-1; i++)
		for(int j = b-1; j < n-1; j++)
			ans[i][j] = A[i+1][j+1];
	return ans;
}

double** AT(double** A, int n) {
	double** ans = matrix(n,n);
	for(int i = 0; i < n; i++)
		for(int j = 0; j < n; j++)
			ans[i][j] = A[j][i];
	return ans;
}

double wyznacznik(double** A, int n) {
	if(n == 1)
		return A[0][0];
	if(n == 2)
		return A[0][0] * A[1][1] - A[0][1] * A[1][0];
	if(n == 3)
		return (A[0][0] * A[1][1] * A[2][2]) +
		+ (A[0][1] * A[1][2] * A[2][0])
		+ (A[0][2] * A[1][0] * A[2][1])
		- (A[0][0] * A[1][2] * A[2][1])
		- (A[0][1] * A[1][0] * A[2][2])
		- (A[0][2] * A[1][1] * A[2][0]);
	double sum = 0;
	for(int i = 0, j = 0; j <= n; j++)
		sum += A[i][j] * wspolczynnik(i,j) * wyznacznik(odetnij(A,n,i+1,j+1),n-1);
	return sum;
}

void f1() {
	int An, Am, Bn, Bm;
	cout<<"Podaj rozmiary macierzy:\n A: ";
	cin>>An>>Am;
	cout<<" B: ";
	cin>>Bn>>Bm;
	if(An != Bn || Am != Bm) {
		cout<<"Nieprawidlowe wymiary macierzy\n";
		return;
	}
	int n = An, m = Am;
	double** A = matrix(n,m);
	double** B = matrix(n,m);
	for(int i = 0; i < n; i++)
		for(int j = 0; j < m; j++)
			cin>>A[i][j];
	for(int i = 0; i < n; i++)
		for(int j = 0; j < m; j++)
			cin>>B[i][j];
	for(int i = 0; i < n; i++)
		for(int j = 0; j < m; j++)
			A[i][j] += B[i][j];
	cout<<"Macierz wynikowa: \n";
	for(int i = 0; i < n; i++) {
		for(int j = 0; j < m; j++)
			cout<<A[i][j]<<" ";
		cout<<"\n";
	}
}

void f2() {
	int An, Am, Bn, Bm;
	cout<<"Podaj rozmiary macierzy:\n A: ";
	cin>>An>>Am;
	cout<<" B: ";
	cin>>Bn>>Bm;
	if(Am != Bn) {
		cout<<"Nieprawidlowe wymiary macierzy\n";
		return;
	}
	int n = An, m = Bm, k = Am;
	double** A = matrix(An,Am);
	double** B = matrix(Bn,Bm);
	for(int i = 0; i < An; i++)
		for(int j = 0; j < Am; j++)
			cin>>A[i][j];
	for(int i = 0; i < Bn; i++)
		for(int j = 0; j < Bm; j++)
			cin>>B[i][j];

	double** C = matrix(n,m);
	for(int i = 0; i < n; i++)
		for(int j = 0; j < m; j++) {
			double sum = 0;
			for(int x = 0; x < k; x++)
				sum += A[i][x] * B[x][j];
			C[i][j] = sum;
		}
	cout<<"Macierz wynikowa: \n";
	for(int i = 0; i < n; i++) {
		for(int j = 0; j < m; j++)
			cout<<C[i][j]<<" ";
		cout<<"\n";
	}
}

void f3() {
	int n, m;
	cout<<"Podaj rozmiary macierzy:\n A: ";
	cin>>n>>m;
	if(n != m || m < 1 || n < 1) {
		cout<<"Nieprawidlowe wymiary macierzy\n";
		return;
	}
	double** A = matrix(n,n);
	for(int i = 0; i < n; i++)
		for(int j = 0; j < n; j++)
			cin>>A[i][j];
	double ans = wyznacznik(A,n);
	cout<<"Wyznacznik wpisanej macierzy wynosi "<<ans<<"\n";
}

void f4() {
	int An, Am;
	cout<<"Podaj rozmiary macierzy:\n";
	cin>>An>>Am;
	if(An != Am || Am < 1 || An < 1) {
		cout<<"Nieprawidlowe wymiary macierzy\n";
		return;
	}
	int n = An;
	double** A = matrix(n,n);
	for(int i = 0; i < n; i++)
		for(int j = 0; j < n; j++)
			cin>>A[i][j];
	double w = wyznacznik(A,n);
	if(w == 0) {
		cout<<"Wyznacznik wpisanej macierzy wynosi 0, macierz odwrotna nie istnieje\n";
		return;
	}
	double** ans = matrix(n,n);
	for(int i = 0; i < n; i++)
		for(int j = 0; j < n; j++)
			ans[i][j] = wspolczynnik(i,j) * wyznacznik(odetnij(A,n,i+1,j+1),n-1);
	ans = AT(ans,n);
	double mnoznik = (double) 1.0 / w;
	for(int i = 0; i < n; i++)
		for(int j = 0; j < n; j++)
			ans[i][j] *= mnoznik;
	for(int i = 0; i < n; i++) {
		for(int j = 0; j < n; j++)
			cout<<fixed<<setprecision(3)<<ans[i][j]<<" ";
		cout<<"\n";
	}
}

int main() {
	char s[20];
	scanf("%s",s);
	if(!strcmp(s,"dodaj"))
		f1();
	if(!strcmp(s,"pomnoz"))
		f2();
	if(!strcmp(s,"wyznacznik"))
		f3();
	if(!strcmp(s,"odwrotna"))
		f4();

	return 0;
}