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Cod sursa(job #862089)
#include<fstream>
#define INF 10000
using namespace std;
ifstream f("royfloyd.in");
ofstream g("royfloyd.out");
int n, a[101][101];
void cit(){
f>>n;
for(int i=1; i<=n; ++i)
for(int j=1; j<=n; ++j)
f>>a[i][j];
}
void rf(){
for(int k=1; k<=n; ++k)
for(int i=1; i<=n; ++i)
for(int j=1; j<=n; ++j)
if( a[i][k]!=INF && a[k][j]!=INF)
if(a[i][j]>=a[i][k]+a[k][j] || !a[i][j]) a[i][j]=a[i][k]+a[k][j];
}
void afis(){
for(int i=1; i<=n; ++i){
for(int j=1; j<=n; ++j)
g<<a[i][j]<<' ';
g<<'\n';
}
}
int main(){
cit();
rf();
afis();
return 0;
}