Cod sursa(job #3317170)

Utilizator Darius_PurcaruPurcaru Darius Constantin Darius_Purcaru Data 22 octombrie 2025 16:49:14
Problema BFS - Parcurgere in latime Scor 30
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.71 kb
#include <bits/stdc++.h>

using namespace std;

vector<int> G[100];
vector<int> dist(100, -1);

void BFS(int v) {
  queue<int> Q;
  Q.push(v);
  dist[v] = 0;
  while (!Q.empty()) {
    int c = Q.front();
    Q.pop();
    for (int n : G[c]) {
      if (dist[n] == -1) {
        dist[n] = dist[c] + 1;
        Q.push(n);
      }
    }
  }
}

int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  freopen("bfs.in", "r", stdin);
  freopen("bfs.out", "w", stdout);
  int n, m, s;
  cin >> n >> m >> s;
  for (int i = 1; i <= m; ++i) {
    int x, y;
    cin >> x >> y;
    G[x].push_back(y);
  }
  BFS(s);
  for (int i = 1; i <= n; ++i) {
    cout << dist[i] << ' ';
  }
  return 0;
}