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Cod sursa(job #146663)
#include <cstdio>
#include <cstdlib>
#include <queue>
#include <vector>
using namespace std;
typedef pair < int, int > P ;
#define MAX 50005
#define INF 0x3f3f3f3f
vector < P > G[MAX];
priority_queue< P, vector < P >, greater<P> > Q;
int dmin[MAX], N,M;
void solve()
{
for (int i = 1; i<=N; i++)
dmin[i] = INF;
dmin[1] = 0;
Q.push( P ( 0, 1) );
while (!Q.empty() )
{
P aux = Q.top(); Q.pop();
for ( vector < P > :: iterator it = G[aux.second].begin(); it != G[aux.second].end(); it++)
if ( dmin[it->second] > dmin[aux.second] + it->first )
{
dmin[it->second] = dmin[aux.second] + it->first;
Q.push( P( dmin[it->second], it->second) );
}
}
}
int main()
{
freopen("dijkstra.in", "r", stdin);
freopen("dijkstra.out", "w", stdout);
scanf("%d %d", &N, &M);
for ( ; M> 0; M--)
{
int a,b,c;
scanf("%d %d %d\n", &a, &b, &c);
G[a].push_back( P ( c,b));
}
solve();
for (int i = 2; i<=N; i++)
printf("%d ", dmin[i]);
return 0;
}