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Cod sursa(job #899913)
#include<cstdio>
int n,din[101][101];
int main()
{
freopen("royfloyd.in","r",stdin);
freopen("royfloyd.out","w",stdout);
scanf("%d",&n);
for(int i=0;i<n;++i)
for(int j=0;j<n;++j)scanf("%d",&din[i][j]);
for(int k=0;k<n;++k)
for(int i=0;i<n;++i)
for(int j=0;j<n;++j)
if(din[i][k]&&din[k][j]&&(din[i][j]>din[i][k]+din[k][j]||!din[i][j])&&i!=j)
din[i][j]=din[i][k]+din[k][j];
for(int i=0;i<n;++i)
{
for(int j=0;j<n;++j)printf("%d ",din[i][j]);
printf("\n");
}
return 0;
}