Mai intai trebuie sa te autentifici.
Cod sursa(job #3295713)
Utilizator | Data | 7 mai 2025 22:39:22 | |
---|---|---|---|
Problema | BFS - Parcurgere in latime | Scor | 100 |
Compilator | cpp-64 | Status | done |
Runda | Arhiva educationala | Marime | 0.83 kb |
#include <iostream>
#include <vector>
#include <queue>
int main(void) {
#ifndef LOCAL
freopen("bfs.in", "r", stdin);
freopen("bfs.out", "w", stdout);
#endif
std::ios::sync_with_stdio(false);
std::cin.tie(nullptr);
int n, m, s;
std::cin >> n >> m >> s;
std::vector<std::vector<int>> adj(n + 1);
for (int i = 0; i < m; ++i) {
int x, y;
std::cin >> x >> y;
adj[x].push_back(y);
}
std::queue<int> q;
std::vector<bool> vis(n + 1, false);
std::vector<int> dist(n + 1, -1);
q.push(s);
vis[s] = true;
dist[s] = 0;
while (!q.empty()) {
int node = q.front();
q.pop();
for (const int &neigh : adj[node]) {
if (!vis[neigh]) {
vis[neigh] = true;
dist[neigh] = dist[node] + 1;
q.push(neigh);
}
}
}
for (int i = 1; i <= n; ++i) {
std::cout << dist[i] << " ";
}
std::cout << "\n";
return 0;
}