Pagini recente » Cod sursa (job #1169932) | Cod sursa (job #2417804) | Monitorul de evaluare | Cod sursa (job #2131737) | Cod sursa (job #2496775)
#include <bits/stdc++.h>
using namespace std;
ifstream f("bfs.in");
ofstream g("bfs.out");
const int N = 100010;
vector<int> v[N];
int n,m,s,d[N];
queue<int> q;
int main()
{
f>>n>>m>>s;
for(; m; m--)
{
int x,y;
f>>x>>y;
v[x].push_back(y);
v[y].push_back(x);
}
d[s]=1;
q.push(s);
while(q.size())
{
s=q.front();
q.pop();
for(auto it:v[s])
if(!d[it])
{
d[it]=d[s]+1;
q.push(it);
}
}
for(int i=1;i<=n;i++)
g<<d[i]-1<<' ';
return 0;
}