Pagini recente » Cod sursa (job #2585038) | Cod sursa (job #1260329) | Cod sursa (job #1674240) | Cod sursa (job #1090029) | Cod sursa (job #2758739)
#include <bits/stdc++.h>
using namespace std;
ifstream f("dijkstra.in");
ofstream g("dijkstra.out");
const int N = 50002;
const int INF = 1000000002;
vector <pair <int,int> > v[N];
int n,m,d[N];
queue <int> q;
bitset <N> viz;
int main()
{
f>>n>>m;
for(;m;m--)
{
int x,y,z;
f>>x>>y>>z;
v[x].push_back(make_pair(y,z));
}
for(int i=1;i<=n;i++)
d[i]=INF;
d[1]=0;
q.push(1);
viz[1]=1;
while(q.size())
{
int nod;
nod=q.front();
q.pop();
viz[nod]=0;
for(auto it:v[nod])
{
int vec,cst;
tie(vec,cst)=it;
if(d[nod]+cst<d[vec])
{
d[vec]=d[nod]+cst;
if(!viz[vec])
{
q.push(vec);
viz[vec]=1;
}
}
}
}
for(int i=2;i<=n;i++)
{
if(d[i]==INF)
d[i]=0;
g<<d[i]<<' ';
}
return 0;
}