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#include <fstream>
#include <iostream>
#include <limits.h>
#include <vector>
#include <queue>
using namespace std;
struct arc{
int y, c;
};
struct elem{
int x, c;
};
struct comp{
bool operator()( elem a, elem b ) const
// |
//se pune CONST la comparatori STL!!!
//vai vai vai...
//
//imagineaza-ti cat de unsafe e poti
//modifica obiectul!!!!
//
//STL si standardele sale au fost
//create in ani de munca si tu nu ai pus
//const...
{
return a.c > b.c;
}
};
priority_queue <elem, vector <elem>, comp> q;
vector <arc> v[50005];
int f[50005];
int main(){
int n, m, i, x, y, c;
ifstream fin( "dijkstra.in" );
ofstream fout( "dijkstra.out" );
fin >> n >> m;
for( i = 0; i < m; i++ ){
fin >> x >> y >> c;
v[x].push_back( { y, c } );
}
for( i = 2; i <= n; i++ ){
f[i] = INT_MAX / 2;
}
q.push( { 1, 0 } );
while( q.empty() == false ){
x = q.top().x;
c = q.top().c;
q.pop();
///cout << x << ' ' << f[x] << ' ' << c << '\n';
if( c != f[x] ){
continue;
}
///cout << x << ' ' << f[x] << '\n';
for( i = 0; i < v[x].size(); i++ ){
y = v[x][i].y;
if( c + v[x][i].c < f[y] ){
f[y] = c + v[x][i].c;
q.push( { y, f[y] } );
}
}
}
for( i = 2; i <= n; i++ ){
if( f[i] == INT_MAX / 2 ){
f[i] = 0;
}
fout << f[i] << ' ';
}
return 0;
}