Pagini recente » Cod sursa (job #2550186) | Cod sursa (job #1981110) | Cod sursa (job #1082383) | Cod sursa (job #1074270) | Cod sursa (job #600706)
Cod sursa(job #600706)
#include <stdio.h>
#include <vector>
#include <deque>
#define N 100001
using namespace std;
vector <int> Noduri[N];
int n, m, s, cost[N];
void BFS()
{
int i, nod_curent;
deque <long int> Q;
memset(cost, -1, sizeof(cost));
Q.push_back(s);
cost[s] = 0;
while(!Q.empty())
{
nod_curent = Q.back();
Q.pop_back();
for(i = 0; i < Noduri[nod_curent].size(); i++)
if(cost[Noduri[nod_curent][i]] < 0)
{
cost[Noduri[nod_curent][i]] = cost[nod_curent] + 1;
Q.push_back(Noduri[nod_curent][i]);
}
}
}
int main()
{
freopen("bfs.in", "r", stdin);
freopen("bfs.out", "w", stdout);
scanf("%d %d %d", &n, &m, &s);
int x, y, i;
for(i = 0; i < m; i++)
{
scanf("%d %d", &x, &y);
Noduri[x].push_back(y);
}
BFS();
for(i = 1; i <= n; i++)
printf("%d ", cost[i]);
printf("\n");
return 0;
}