Cod sursa(job #185614)

Utilizator toni2007Pripoae Teodor Anton toni2007 Data 25 aprilie 2008 18:22:57
Problema Algoritmul lui Dijkstra Scor 30
Compilator c Status done
Runda Arhiva educationala Marime 1.48 kb
#include <stdio.h>
#include <stdlib.h>
#define N 50010
#define INF 250000010
int *cine[N],*cost[N],dist[N],n,m,cati[N];
struct nod{
	int cine,cost;
};
int incoada[N];
int coada[500000];
void scan(){
    int i,j,c;
    freopen("dijkstra.in","r",stdin);
    freopen("dijkstra.out","w",stdout);
    scanf("%d%d",&n,&m);
    while (m--){
      scanf("%d%d%d",&i,&j,&c);
      ++cati[i];
    }
    fclose(stdin);
    for (i=1;i<=n;++i){
       dist[i]=INF;
       cine[i]=(int*)malloc(cati[i]+5);
       cost[i]=(int*)malloc(cati[i]+5);
       cati[i]=0;
    }
    freopen("dijkstra.in","r",stdin);
    scanf("%d%d",&n,&m);
    while (m--){
      scanf("%d%d%d",&i,&j,&c);
      ++cati[i];
      cine[i][cati[i]]=j;
      cost[i][cati[i]]=c;
    }
}
void bellman_ford(){
    register int p,u,i;
    int e,now;
    p=u=0;
    coada[u++]=1;
    dist[1]=0;
    while (p<u){
      e=coada[p++];
      incoada[e]=0;
      for (i=1;i<=cati[e];++i){
         now=cine[e][i];
         if(dist[now] > dist[e] + cost[e][i]){
            dist[now] = dist[e] + cost[e][i];
            if (!incoada[now]){
              incoada[now]=1;
              coada[u++]=now;
            }
         }
      }
    }
}
void print(){
    int i,j;
    for (i=2;i<=n;++i){
        if (dist[i]==INF)
           dist[i]=0;
        printf("%d ",dist[i]);
    }
    fclose(stdin);
    fclose(stdout);
    exit(0);
}
int main(){
    scan();
    bellman_ford();
    print();
}