#include<fstream>
#include<stdio.h>
using namespace std;
int a[100][100];



int main()
{
	int n,j,i,k;
	FILE *f=fopen("royfloyd.in","rt");
	FILE *g=fopen("royfloyd.out","wt");
	
	fscanf(f,"%d",&n);
	fprintf(g,"%d",n);
	for(i=0;i<n;i++)
		for(j=0;j<n;j++)
		{
			fscanf(f,"%d",&a[i][j]);
			if(a[i][j]==0) a[i][j]=999998;
		}
	for(k=0;k<n;k++)
		for(i=0;i<n;i++)
			for(j=0;j<n;j++)
				if(a[i][k]+a[k][j]<a[i][j]) a[i][j]=a[i][k]+a[k][j];
	for(i=0;i<n;i++)
	{
		for(j=0;j<n;i++)
			fprintf(g,"%d ",a[i][j]);
		fprintf(g,"\n");
	}
	return 0;
}