Pagini recente » Cod sursa (job #2451046) | Cod sursa (job #2264643) | Cod sursa (job #1859529) | Cod sursa (job #3187320) | Cod sursa (job #2869668)
#include <bits/stdc++.h>
#define MOD 1999999973
using namespace std;
ifstream fin("bfs.in");
ofstream fout("bfs.out");
int n, m, k, d[100003];
vector<int> h[100003];
bitset<100003> viz;
void Citire()
{
int x, y;
fin >> n >> m >> k;
for (int i = 1; i <= m; i++)
{
fin >> x >> y;
h[x].push_back(y);
}
}
void BFS(int k)
{
int nod;
queue<int> q;
q.push(k);
viz[k] = 1;
while(!q.empty())
{
nod = q.front();
q.pop();
for (int w : h[nod])
{
if(viz[w] == 0)
{
viz[nod] = 1;
d[w] = 1 + d[nod];
q.push(w);
}
}
}
for (int i = 1; i <= n; i++)
if (d[i] == 0 && i != k) fout << -1 << " ";
else fout << d[i] << " ";
}
int main()
{
Citire();
BFS(k);
return 0;
}