Pagini recente » Cod sursa (job #1918723) | Cod sursa (job #2618406) | Cod sursa (job #3242750) | Cod sursa (job #3235386) | Cod sursa (job #2814997)
#include <bits/stdc++.h>
using namespace std;
#define all(c) (c).begin(), (c).end()
#define rall(A) A.rbegin(),A.rend()
#define pb push_back
#define dbg(x) do {cerr << #x <<" = " << (x) << endl; } while (false)
typedef long long ll;
typedef pair<ll, int> ii;
typedef vector<int> vi;
typedef vector<ii> vii;
//cout << setprecision(12) << fixed;
const int maxn = 5e4+5;
const ll INF = (ll) 1e18;
int n, m;
vector<ll> d;
vii adj[maxn];
void dijkstra(int s) {
d.assign(n, INF);
d[s] = 0;
priority_queue<ii, vector<ii>, greater<ii>> q;
q.push({0, s});
while (!q.empty()) {
int v = q.top().second;
ll d_v = q.top().first;
q.pop();
if (d_v != d[v])
continue;
for (auto edge : adj[v]) {
int to = edge.first;
ll len = edge.second;
if (d[v] + len < d[to]) {
d[to] = d[v] + len;
q.push({d[to], to});
}
}
}
}
int main() {
ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
ifstream in; ofstream out;
in.open("dijkstra.in");
out.open("dijkstra.out");
in >> n >> m;
for(int i = 0; i < m; i++) {
int a, b, w; in >> a >> b >> w;
a--; b--;
adj[a].pb({b, w});
adj[b].pb({a, w});
}
dijkstra(0);
for(int i = 1; i < n; i++) {
if(d[i] == INF) out << 0 << " ";
else out << d[i] << " ";
}
return 0;
}