#include <cstdio>
#include <cmath>
#include <iostream>
using namespace std;

const int MAX = 15;
long double A[MAX][MAX];
long double B[MAX][MAX];
const long double eps = 10E-14;

long double calc(long double w)
{
	if (fabs(w) < eps) return 0;
	else return w;
}

int main()
{
	int n;
	scanf("%d", &n);
	for (int i = 0; i < n; i++)
	{
		for (int j = 0; j < n; j++)
		{
			scanf("%Lf", &A[j][i]);
		}
	}
	for (int i = 0; i < n; i++) B[i][i] = 1;
	for (int i = 0; i < n; i++)
	{
		printf("%8.4Lf", A[0][i]);
		for (int j = 1; j < n; j++) printf(" %8.4Lf", A[j][i]);
		printf("|%8.4Lf", B[0][i]);
		for (int j = 1; j < n; j++) printf(" %8.4Lf", B[j][i]);
		printf("\n");
	}
	printf("\n");
	for (int i = 0; i < n; i++)
	{
		if (A[i][i] != 1)
		{
			long double temp = 1 / A[i][i];
			for (int j = 0; j < n; j++)
			{
				A[j][i] = calc(A[j][i] * temp);
				B[j][i] = calc(B[j][i] * temp);

			}
		}
		for (int j = 0; j < n; j++)
		{
			if (j == i) continue;

			long double temp = A[i][j];
			for (int l = 0; l < n; l++)
			{
				A[l][j] = calc(A[l][j] - temp * A[l][i]);
				B[l][j] = calc(B[l][j] - temp * B[l][i]);

			}
		}

		for (int l = 0; l < n; l++)
		{
			printf("%8.4Lf", A[0][l]);
			for (int j = 1; j < n; j++) printf(" %8.4Lf", A[j][l]);
			printf("|%8.4Lf", B[0][l]);
			for (int j = 1; j < n; j++) printf(" %8.4Lf", B[j][l]);
			printf("\n");
		}
		printf("\n");

	}
	system("pause");
}