Pagini recente » Cod sursa (job #2809997) | Rating FMI Iordachescu Anca Mihaela (IordachescuAnca) | Cod sursa (job #1749251) | Cod sursa (job #1269484) | Cod sursa (job #145747)
Cod sursa(job #145747)
#include<fstream.h>
#define nmax 50100
#define mmax 251000
#define inf 10000000
ifstream f("dijkstra.in");
ofstream g("dijkstra.out");
int a[mmax], st[mmax], viz[nmax], dis[nmax], n, m, i, j, cost[mmax], prim, x, y, sum, c, min;
int main()
{
f>>n>>m;
for(i=1; i<=m; i++){
f>>x>>y>>c;
st[x]++; st[y]++;
}
f.close();
sum=0;
for(i=1; i<=n+2; i++){
st[i-1]=sum;
sum=sum+st[i];
}
ifstream f("dijkstra.in");
f>>n>>m;
for(i=1; i<=m; i++){
f>>x>>y>>c;
a[st[x]]=y;
cost[st[x]]=c;
cost[st[y]]=c;
a[st[y]]=x;
st[x]--; st[y]--;
}
f.close();
for(i=1; i<=n; i++) dis[i]=inf;
dis[1]=0;
prim=1;
for(i=1; i<=n; i++){
for(j=st[prim]+1; j<=st[prim+1]; j++) if( dis[prim]+cost[j] < dis[a[j]] ) dis[a[j]]=dis[prim]+cost[j];
viz[prim]=1;
min=inf;
for(j=1; j<=n; j++) if( dis[j]<min && !viz[j] ){ min=dis[j]; prim=j; }
}
for(i=1; i<=n; i++) g<<dis[i]<<' ';
g.close();
return 0;
}