Pagini recente » Monitorul de evaluare | tema | Cod sursa (job #2833329) | Cod sursa (job #1080672) | Cod sursa (job #2916398)
#include <iostream>
#include <fstream>
#include <queue>
using namespace std;
ifstream f("bfs.in");
ofstream g("bfs.out");
int a[1001][1001],viz[1001],n,m,i,l,c,s,b,lung;
queue <pair<int,int>>q;
void bfs()
{
while(!q.empty())
{
b=q.front().first;
lung=q.front().second;
for(i=1;i<=n;i++)
{
if(a[b][i]==1&&viz[i]==0)
{
q.push({i,lung+1});
viz[i]=lung+1;
}
}
q.pop();
}
}
int main()
{
f>>n>>m>>s;
for(i=1;i<=m;i++)
{
f>>l>>c;
a[l][c]=1;
}
q.push({s,1});
viz[s]=1;
bfs();
for(i=1;i<=n;i++)
{
cout<<viz[i]-1<<" ";
}
return 0;
}