Pagini recente » Borderou de evaluare (job #1034265) | Cod sursa (job #2560243) | Cod sursa (job #512597) | Cod sursa (job #3149511) | Cod sursa (job #2541116)
#include <bits/stdc++.h>
using namespace std;
ifstream f("dijkstra.in");
ofstream g("dijkstra.out");
const int N = 50010;
const int oo = 1000000010;
int n,m,d[N];
vector<pair<int,int>> v[N];
priority_queue<pair<int,int>> pq;
int main()
{
f>>n>>m;
for(; m; m--)
{
int x,y,c;
f>>x>>y>>c;
v[x].push_back(make_pair(y,c));
}
fill(d+1,d+n+1,oo);
d[1]=0;
pq.push(make_pair(0,1));
while(pq.size())
{
int dist,nod;
tie(dist,nod)=pq.top();
pq.pop();
dist=-dist;
if(dist>d[nod])
continue;
for(auto it:v[nod])
{
int vec,distv;
tie(vec,distv)=it;
if(d[vec]>dist+distv)
{
d[vec]=dist+distv;
pq.push(make_pair(-d[vec],vec));
}
}
}
for(int i=2; i<=n; i++)
{
if(d[i]==oo)
d[i]=0;
g<<d[i]<<' ';
}
return 0;
}