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Cod sursa(job #846105)
#include <stdio.h>
#include <algorithm>
using namespace std;
#define inf 0xffffff
int d[101][101],n;
void OpenFiles(int);
void Roy_Floyd();
int main(int arg,char *argv[])
{
OpenFiles(arg);
scanf("%d",&n);
for(int i=1;i<=n;i++)
for(int j=1;j<=n;j++)
{
scanf("%d",&d[i][j]);
if(d[i][j]==0)d[i][j]=inf;
}
Roy_Floyd();
for(int i=1;i<=n;i++)
{
for(int j=1;j<=n;j++)
if(d[i][j]==inf)printf("0 "); else
printf("%d ",d[i][j]);
printf("\n");
}
return 0;
}
void Roy_Floyd()
{
for(int k=1;k<=n;k++)
for(int i=1;i<=n;i++)
for(int j=1;j<=n;j++)
if(i!=j && i!=k && d[i][j] > d[i][k]+d[k][j])
d[i][j]=d[i][k]+d[k][j];
}
void OpenFiles(int arg)
{
freopen("royfloyd.in","r",stdin);
if(arg==0)
{
freopen("royfloyd.out","w",stdout);
}
}