Pagini recente » Cod sursa (job #3365052) | Atasamentele paginii Profil Iancu_Stefan | Cod sursa (job #3367178) | Cod sursa (job #3367112) | Cod sursa (job #3366548)
#include <bits/stdc++.h>
using namespace std;
const int NMAX = 1e5;
vector<int> L[NMAX + 1]; //vector<vector<int>> L;
int dist[NMAX + 1];
int n, m, s;
void bfs(int node) {
queue<int> q;
for(int i = 1; i <= n; i++) {
dist[i] = -1;
}
dist[node] = 0;
q.push(node);
while(!q.empty()) {
node = q.front();
q.pop();
for(auto vec : L[node]) {
if(dist[vec] == -1) {
dist[vec] = dist[node] + 1;
q.push(vec);
}
}
}
}
int main() {
ifstream cin("bfs.in");
ofstream cout("bfs.out");
cin >> n >> m >> s;
for(int i = 1; i <= m; i++) {
int x, y;
cin >> x >> y;
L[x].push_back(y);
//L[y].push_back(x);
}
bfs(s);
for(int i = 1; i <= n; i++) {
cout << dist[i] << ' ';
}
}