Pagini recente » Cod sursa (job #486939) | Cod sursa (job #1236106) | Cod sursa (job #3148391) | Cod sursa (job #1468262) | Cod sursa (job #2771325)
#include <bits/stdc++.h>
#define mod 1000000007
#define int long long
#define dim 50002
using namespace std;
ifstream fin ("dijkstra.in");
ofstream fout("dijkstra.out");
int n,sol[dim];
const int inf=100000000000000;
struct el
{
int nod,cost;
bool operator < (const el &A) const
{
return cost>A.cost;
}
};
priority_queue<el> pq;
vector<el> a[dim];
void dijkstra ()
{
while (!pq.empty())
{
el x=pq.top();
pq.pop();
if (x.cost==sol[x.nod])
for (auto y: a[x.nod])
if (x.cost+y.cost<sol[y.nod])
{
sol[y.nod]=x.cost+y.cost;
pq.push({y.nod,sol[y.nod]});
}
}
}
int32_t main()
{
int i,m,x,y,z;
fin>>n>>m;
for (i=2;i<=n;i++)
sol[i]=inf;
for (i=1;i<=m;i++)
{
fin>>x>>y>>z;
a[x].push_back({y,z});
}
pq.push ({1,0});
dijkstra();
for (i=2;i<=n;++i)
if (sol[i]==inf)
fout<<0<<' ';
else fout<<sol[i]<<' ';
return 0;
}