Pagini recente » Cod sursa (job #3003928) | Cod sursa (job #1869996) | Diferente pentru implica-te/arhiva-educationala intre reviziile 141 si 140 | Cod sursa (job #2467787) | Cod sursa (job #2793256)
#include <bits/stdc++.h>
using namespace std;
ifstream fin("bfs.in");
ofstream fout("bfs.out");
#define cin fin
#define cout fout
#define N 100005
vector < vector < int > > g;
int n, m, s, x, y, d[N];
void fa(int nod)
{
queue < int > q;
q.push(nod);
while(!q.empty())
{
int x = q.front();
q.pop();
for(int i = 0 ; i < g[x].size() ; i++)
{
if(d[g[x][i]] == -1)
{
d[g[x][i]] = d[x]+1;
q.push(g[x][i]);
}
}
}
}
int main()
{
cin >> n >> m >> s;
g.resize(n+5);
for(int i = 1 ; i <= m ; i++)
{
cin >> x >> y;
g[x].push_back(y);
}
for(int i = 1 ; i <= n ; i++)
{
d[i] = -1;
}
d[s] = 0;
fa(s);
for(int i = 1 ; i <= n ; i++)
{
cout << d[i] << " ";
}
return 0;
}