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Cod sursa(job #670790)
#include <iostream>
#include<stdio.h>
#include<vector>
using namespace std;
int n,m,i,j,l,x,y,c,p,u;
struct abc
{
vector<int> v;
vector<int> c;
} v[50040];
int a[2000000],cost[50001];
int main()
{
freopen("dijkstra.in","r",stdin);
freopen("dijkstra.out","w",stdout);
scanf("%d %d",&n,&m);
for (i=1;i<=n;i++)
cost[i]=999999999;
for (i=1;i<=m;i++)
{
scanf("%d %d %d",&x,&y,&c);
v[x].v.push_back(y);
v[x].c.push_back(c);
}
u=1;
p=1;
a[1]=1;
cost[1]=0;
//printf("ajunge");
while (p<=u)
{
//printf("%d\n",v[a[p]].v.size());
for (i=0;i<v[a[p]].v.size();i++)
{
if (cost[v[a[p]].v.at(i)]>v[a[p]].c.at(i)+cost[a[p]])
{
u++;
a[u]=v[a[p]].v.at(i);
cost[v[a[p]].v.at(i)]=v[a[p]].c.at(i)+cost[a[p]];
}
}
p++;
}
for (i=2;i<=n;i++)
printf("%d ",cost[i]);
return 0;
}