Pagini recente » Cod sursa (job #1682472) | Cod sursa (job #1009486) | Cod sursa (job #40631) | Cod sursa (job #1570337) | Cod sursa (job #255600)
Cod sursa(job #255600)
#include<stdio.h>
#define max 50010
long d[max], vz[max], n, m;
struct elem
{ long v, c;
elem *urm;
} *a[max], *q;
FILE *f, *g;
void read()
{ long i, x, y, cs;
f=fopen("dijkstra.in", "r");
fscanf(f, "%ld%ld", &n, &m);
for(i=0; i<m; i++)
{ fscanf(f, "%ld%ld%ld", &x, &y, &cs);
q=new elem;
q->c=cs; q->v=y;
q->urm=a[x];
a[x]=q;
}
fclose(f);
}
void solve()
{ long cd[100000], i, p, u;
/* for(i=0; i<12; i++)
cd[i]=0;*/
for(i=2; i<=n; i++)
d[i]=2000000000;
p=1; u=1;
cd[p]=1; vz[1]=1;
while(p<=u)
{ q=a[cd[p]];
while(q)
{ if(q->c+d[cd[p]]<d[q->v])
{ d[q->v]=q->c+d[cd[p]];
if(vz[q->v]==0)
{ u++;
cd[u]=q->v;
vz[q->v]=1;
}
}
q=q->urm;
}
vz[cd[p]]=0;
p++;
}
for(i=1; i<=n; i++)
if(d[i]==2000000000)
d[i]=0;
}
void write()
{ long i;
g=fopen("dijkstra.out", "w");
for(i=2; i<=n; i++)
fprintf(g, "%ld ", d[i]);
fprintf(g, "\n");
fclose(g);
}
int main()
{ read();
solve();
write();
return 0;
}