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Cod sursa(job #894730)
#include <cstdio>
using namespace std;
int n;
int x[101][101];
void royfl()
{
for(int k=1;k<=n;++k)
for(int i=1;i<=n;++i)
for(int j=1;j<=n;++j)
if(i!=j&&x[i][k]&&x[k][j]&&(x[i][j]==0||x[i][j]>x[i][k]+x[k][j]))
x[i][j]=x[i][k]+x[k][j];
}
void citire()
{
freopen("royfloyd.in","r",stdin);
scanf("%d",&n);
for(int i=1;i<=n;++i)
for(int j=1;j<=n;++j)
scanf("%d",&x[i][j]);
}
void afis()
{
freopen("royfloyd.out","w",stdout);
for(int i=1;i<=n;++i){
for(int j=1;j<=n;++j)
printf("%d ",x[i][j]);
printf("\n");}
}
int main()
{
citire();
royfl();
afis();
return 0;
}