Pagini recente » Cod sursa (job #1081351) | Cod sursa (job #1344655) | Cod sursa (job #382953) | Cod sursa (job #1775474) | Cod sursa (job #396239)
Cod sursa(job #396239)
#include <cstdio>
#include <set>
#include <vector>
using namespace std;
#define file_in "dijkstra.in"
#define file_out "dijkstra.out"
#define f first
#define s second
#define Nmax 101000
vector<int> G[Nmax],C[Nmax];
int d[Nmax];
int n,m;
set< pair<int,int> > t;
char s[1000];
void solve()
{
int i,val,nod;
memset(d,0x3f,sizeof(d));
d[1]=0;
t.insert(make_pair(0,1));
while(t.size()>0)
{
val=(*t.begin()).first;
nod=(*t.begin()).second;
t.erase(*t.begin());
for (i=0;i<G[nod].size();++i)
{
if (d[G[nod][i]]>C[nod][i]+val)
d[G[nod][i]]=C[nod][i]+val,
t.insert(make_pair(d[G[nod][i]],G[nod][i]));
}
}
}
int main()
{
int i,a,b,c,j;
freopen(file_in,"r",stdin);
freopen(file_out,"w",stdout);
scanf("%d %d\n", &n ,&m);
for (i=1;i<=m;++i)
{
//scanf("%d %d %d", &a, &b, &c);
gets(s);
j=0;
int l=strlen(s);
a=b=c=0;
while(s[j]>='0' && s[j]<='9')
{
a=a*10+s[j]-'0';
j++;
}
j++;
while(s[j]>='0' && s[j]<='9')
{
b=b*10+s[j]-'0';
j++;
}
j++;
while(s[j]>='0' && s[j]<='9')
{
c=c*10+s[j]-'0';
j++;
}
j++;
G[a].push_back(b);
C[a].push_back(c);
}
solve();
for (i=2;i<=n;++i)
if (d[i]==0x3f3f3f3f)
printf("0 ");
else
printf("%d ", d[i]);
fclose(stdin);
fclose(stdout);
return 0;
}