Pagini recente » Cod sursa (job #2700518) | Cod sursa (job #1969066) | Cod sursa (job #2908943) | Cod sursa (job #1521628) | Cod sursa (job #481424)
Cod sursa(job #481424)
#include <cstdio>
#include <vector>
#include <deque>
#define N 100003
#define pb push_back
#define f front
using namespace std;
vector <int> v[N];
deque <int> d;
int sol[N];
int main()
{
int n,m,s,i,p=1,j;
freopen("bfs.in","r",stdin);
freopen("bfs.out","w",stdout);
scanf("%d %d %d",&n,&m,&s);
for (i=1;i<=m;++i)
{
int a,b;
scanf("%d %d",&a,&b);
v[a].pb(b);
}
d.pb(s);sol[s]=1;s=2;
for (;p;++s)
for (j=p,p=0;j>0;--j)
{
i=d.f();
d.pop_front();
while (!v[i].empty())
{
if (!sol[v[i].back()])
sol[v[i].back()]=s,d.pb(v[i].back()),++p;
v[i].pop_back();
}
}
for (i=1;i<=n;++i) printf("%d ",sol[i]-1);
return 0;}