#include <algorithm>
#include <cstdio>
#include <cstdlib>
#include <cctype>
#include <cmath>
#include <iostream>
#include <queue>
#include <list>
#include <map>
#include <numeric>
#include <set>
#include <sstream>
#include <string>
#include <vector>
using namespace std;
#define REP(i,a,n) for(int i=(a); i<(int)(n); i++)
#define rep(i,n) REP(i,0,n)
#define FOR(it,c) for(__typeof((c).begin()) it=(c).begin(); it!=(c).end(); ++it)
#define ALLOF(c) (c).begin(), (c).end()
typedef long long ll;


int main(){
  int N, M;
  cin >> N;
  cin >> M;
  vector<int> v(4,0);
  v[N] = 1;

  rep(i,M){
    int P, Q;
    cin >> P >> Q;
    swap(v[P], v[Q]);
  }

  rep(i,4){
    if(v[i] == 1){
      cout << i << endl;
    }
  }

  
  return 0;
}