Cod sursa(job #669101)

Utilizator ion824Ion Ureche ion824 Data 26 ianuarie 2012 09:33:00
Problema Floyd-Warshall/Roy-Floyd Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 1 kb
#include<fstream>
using namespace std;

int a[260][260],b[260][260],n;

void readdata(){
     ifstream fin("rf.in");
     fin>>n;
     for(int i=1;i<=n;++i)
       for(int j=1;j<=n;++j)
         { fin>>a[i][j]; if(a[i][j])b[i][j]++; }
     fin.close();    
     }
   
void royfloyd(){
     int i,j,k;  
        
     for(k=1;k<=n;++k)
       for(i=1;i<=n;++i)
         for(j=1;j<=n;++j)
           if(a[i][k] && a[k][j] && (a[i][j] >= a[i][k] + a[k][j] || !a[i][j]) && i!=j){ a[i][j]=a[i][k]+a[k][j]; if(a[i][j] == a[i][k] + a[k][j])b[i][j]++;  }       
     }     

void writedata(){
     ofstream fout("rf.out");
     for(int i=1;i<=n;++i){
       for(int j=1;j<=n;++j)
         fout<<a[i][j]<<' '; fout<<'\n'; }  
     for(int i=1;i<=n;++i){
       for(int j=1;j<=n;++j)
         fout<<b[i][j]<<' '; fout<<'\n'; } 
  fout.close();           
}           
     
int main(void){
    ofstream fout("royfloyd.out");
    readdata();
    royfloyd();
    writedata();
 return 0;   
}