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Cod sursa(job #753707)
#include <cstdio>
#include <vector>
#include <set>
#define INF 0xffffff
using namespace std;
vector<pair<int,int> >g[50005];
set<pair<int,int> >s;
int d[50005],n,m;
bool viz[50005];
void dijkstra(){
int x,y,c;
for(int i=2;i<=n;i++) d[i] = INF;
s.insert( make_pair(0,1) );
while(s.size() > 0)
{
x = s.begin()->second;
c = s.begin()->first;
s.erase(s.begin());
if( viz[x] ) continue;
viz[x] = 1;
for(int i=0;i<g[x].size();i++)
{
y = g[x][i].first;
if(viz[y] == 0 && d[y] > c+g[x][i].second)
{
d[y] = c+g[x][i].second;
s.insert( make_pair(d[y],y) );
}
}
}
}
int main(){
int x,y,c;
freopen("dijkstra.in","r",stdin);
freopen("dijkstra.out","w",stdout);
scanf("%d %d",&n,&m);
for(int i=0;i<m;i++)
{
scanf("%d %d %d",&x,&y,&c);
g[x].push_back( make_pair(y,c) );
}
dijkstra();
for(int i=2;i<=n;i++) printf("%d ",d[i] == INF ? 0 : d[i]);
return 0;
}