for(k=;k<=n;k++)

        for(i=;i<=n;i++)

            for(j=;j<=n;j++)

            d[i][j]=d[i][j]||(d[i][k]&&d[k][j]);

User ainta has a permutation p₁, p₂, ..., p_n. As the New Year is coming, he wants to make his permutation as pretty as possible.

Permutation a₁, a₂, ..., a_n is prettier than permutation b₁, b₂, ..., b_n, if and only if there exists an integer k (1 ≤ k ≤ n) where a₁ = b₁, a₂ = b₂, ..., a_k - 1 = b_k - 1 and a_k < b_k all holds.

As known, permutation p is so sensitive that it could be only modified by swapping two distinct elements. But swapping two elements is harder than you think. Given an n × n binary matrix A, user ainta can swap the values of p_i and p_j (1 ≤ i, j ≤ n, i ≠ j) if and only if A_i, j = 1.

Given the permutation p and the matrix A, user ainta wants to know the prettiest permutation that he can obtain.

The first line contains an integer n (1 ≤ n ≤ 300) — the size of the permutation p.

The second line contains n space-separated integers p₁, p₂, ..., p_n — the permutation p that user ainta has. Each integer between 1and n occurs exactly once in the given permutation.

Next n lines describe the matrix A. The i-th line contains n characters '0' or '1' and describes the i-th row of A. The j-th character of thei-th line A_i, j is the element on the intersection of the i-th row and the j-th column of A. It is guaranteed that, for all integers i, j where 1 ≤ i < j ≤ n, A_i, j = A_j, i holds. Also, for all integers i where 1 ≤ i ≤ n, A_i, i = 0 holds.

In the first and only line, print n space-separated integers, describing the prettiest permutation that can be obtained.

In the first sample, the swap needed to obtain the prettiest permutation is: (p₁, p₇).

In the second sample, the swaps needed to obtain the prettiest permutation is (p₁, p₃), (p₄, p₅), (p₃, p₄).

A permutation p is a sequence of integers p₁, p₂, ..., p_n, consisting of n distinct positive integers, each of them doesn't exceed n. Thei-th element of the permutation p is denoted as p_i. The size of the permutation p is denoted as n.

#include<stdio.h>

#include<algorithm>

using namespace std;

int a[1010],d[1010][1010];

char s[1020];

int main()

{

	int n,i,j,k;

	scanf("%d",&n);

	for(i=1;i<=n;i++) scanf("%d",&a[i]);

	for(i=1;i<=n;i++)

	{

		scanf("%s",&s);

		for(j=0;j<n;j++)

		{

			if(s[j]=='1')  d[i][j+1]=1;

			else  d[i][j+1]=0;

		}

	}

	for(k=1;k<=n;k++)

		for(i=1;i<=n;i++)

			for(j=1;j<=n;j++)

			d[i][j]=d[i][j]||(d[i][k]&&d[k][j]);

	for(i=1;i<=n;i++)

	{

		for(j=i+1;j<=n;j++)

		{

			if(d[i][j]&&a[i]>a[j])

			swap(a[i],a[j]);

		}

	}

	for(i=1;i<n;i++)

	printf("%d ",a[i]);

	printf("%d\n",a[i]);

}