// ConsoleApplication211.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include <iomanip>
#include <iostream>
#include <functional>
#include <algorithm>
#include <math.h>
#include <cmath>
#include <string>
#include <cstring>
#include <vector>
#include<set>
#include<map>
#include <time.h>
#include <fstream>
#include <queue>
typedef long long ll;
using namespace std;
int n, m;
vector<int> v[1000];

ll vis[1000];
int main()
{
	cin >> n >> m;
	for (int i = 0; i < m; i++){
		int x, y;
		scanf("%d %d", &x, &y);
		//	cin >> x >> y;
		v[x].push_back(y);
		v[y].push_back(x);
	}
	int s;
	cin >> s;

	memset(vis, -1, sizeof vis);
	queue <int> Q;
	Q.push(s);
	vis[s] = 0;
	int h1, h2;
	h1 = s;
	while (!Q.empty())
	{
		h1 = Q.front();
		Q.pop();
		for (int i = 0; i < v[h1].size(); i++){
			int nxt = v[h1][i];
			if (vis[nxt] == -1){
				vis[nxt] = vis[h1] + 1;
				Q.push(nxt);
			}
		}



	}
	for (int i = 0; i < n; i++){
		printf("%d %d\n", i, vis[i]);
	}




}