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#include <iostream>
#include <fstream>
#include <string>
#include <vector>
#include <queue>
#include <math.h>
#include <stdlib.h>
#define MAX 999999
const char *in_file_name = "dijkstra.in";
const char *out_file_name = "dijkstra.out";
using namespace std;
ifstream in_file;
ofstream out_file;
int N, M;
int *dist;
vector<pair <int, int> > *edges;
bool *visited;
queue <int> Q;
void die(bool assertion, const char *message)
{
if (assertion) {
fprintf(stderr, "(%s, %d): ",__FILE__, __LINE__);
perror(message);
exit(EXIT_FAILURE);
}
}
void read_file()
{
/* N - noduri */
/* M - arce */
int from, to, cost;
in_file >> N >> M;
edges = new vector<pair <int, int> >[N+1];
visited = new bool[N+1];
dist = new int[N+1];
for (int i = 0; i < M; i++) {
in_file >> from >> to >> cost;
edges[from].push_back(make_pair(to, cost));
}
dist[1] = 0;
for (int i = 2; i <= N; i++)
dist[i] = MAX;
}
void write_file()
{
for (int i = 2; i <= N; i++)
out_file << (dist[i] < MAX ? dist[i] : 0) << " ";
}
void dijkstra()
{
int node, node2, cost;
while (Q.empty() == false) {
node = Q.front();
Q.pop();
visited[node] = false;
for (int i = 0; i < (int)edges[node].size(); i++) {
node2 = edges[node][i].first;
cost = edges[node][i].second;
if (dist[node] + cost < dist[node2]) {
dist[node2] = dist[node] + cost;
if (visited[node2] == false) {
Q.push(node2);
visited[node2] = true;
}
}
}
}
}
int main()
{
in_file.open(in_file_name, ios::in);
die(!in_file, "Error opening file for reading");
out_file.open(out_file_name, ios::out);
die(!out_file, "Error opening file for writing");
read_file();
visited[1] = true;
Q.push(1);
dijkstra();
write_file();
in_file.close();
out_file.close();
delete []edges;
delete []visited;
delete []dist;
return 0;
}