Cod sursa(job #1921681)

Utilizator Valy333Hojbota Valy Valy333 Data 10 martie 2017 13:50:51
Problema Algoritmul Bellman-Ford Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 0.93 kb
#include <iostream>
#include <fstream>
using namespace std;
ifstream in("date.in");
ofstream out("date.out");
int mat[20000][20000],inf=2000000000;
void citire (int&n)
{
    int m,x,y;
    in>>n>>m;
    for(int i=1;i<=m;i++)
    {
        in>>x>>y;
        in>>mat[x][y];
    }
}

void construire(int n,int c[])
{
    for(int i=2;i<=n;i++)
        c[i]=inf;
}

void afisare(int n,int c[])
{
    for(int i=2;i<=n;i++)
        out<<c[i]<<' ';
}

void BF(int n,int c[])
{
    int ok=1;
    while(ok==1)
    {
        ok=0;
        for(int i=1;i<=n;i++)
        {
            for(int j=1;j<=n;j++)
            {
                if(mat[i][j]!=0&&c[j]>c[i]+mat[i][j])
                {
                    ok=1;
                    c[j]=c[i]+mat[i][j];
                }
            }
        }
    }
}

int main()
{
    int n,c[50001];
    citire(n);
    construire(n,c);
    BF(n,c);
    afisare(n,c);
}