Pagini recente » Cod sursa (job #954297) | Cod sursa (job #1079901) | Cod sursa (job #3318962) | Cod sursa (job #3336074) | Cod sursa (job #3354599)
import java.io.InputStreamReader;
import java.util.ArrayDeque;
import java.util.Arrays;
import java.util.LinkedList;
import java.util.Queue;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.Reader;
import java.util.StringTokenizer;
class MyScanner1 {
private BufferedReader br;
private StringTokenizer st;
public MyScanner1(Reader reader) {
br = new BufferedReader(reader);
}
public String next() {
while (st == null || !st.hasMoreElements()) {
try {
st = new StringTokenizer(br.readLine());
} catch (IOException e) {
e.printStackTrace();
}
}
return st.nextToken();
}
public int nextInt() {
return Integer.parseInt(next());
}
public long nextLong() {
return Long.parseLong(next());
}
public double nextDouble() {
return Double.parseDouble(next());
}
public String nextLine() {
String str = "";
try {
str = br.readLine();
} catch (IOException e) {
e.printStackTrace();
}
return str;
}
}
public class Main {
public static void main(String[] args) {
MyScanner1 scanner = new MyScanner1(new InputStreamReader(System.in));
int n, m, s;
n = scanner.nextInt();
m = scanner.nextInt();
s = scanner.nextInt();
int[] number = new int[n + 1];
int[][] graph = new int[n + 1][n + 1];
int[] distance = new int[n + 1];
Arrays.fill(distance, Integer.MAX_VALUE);
Arrays.fill(number, 1);
for (int i = 1; i <= m; i++)
{
int a = scanner.nextInt();
int b = scanner.nextInt();
graph[a][number[a]] = b;
number[a]++;
}
Queue<Integer> q = new ArrayDeque<>();
q.add(s);
distance[s] = 0;
while (!q.isEmpty())
{
int node = q.poll();
for (Integer adj : graph[node])
{
if (distance[node] + 1 < distance[adj])
{
distance[adj] = distance[node] + 1;
q.add(adj);
}
}
}
for (int i = 1; i <= n; i++)
{
if (distance[i] == Integer.MAX_VALUE)
{
distance[i] = -1;
}
}
for (int i = 1; i <= n; i++)
{
System.out.print(distance[i] + " ");
}
}
}