#include <bits/stdc++.h>
using namespace std;
int main() {
int P, N;
cin >> P >> N;
if (P == 1) {
vector<int> a(N - 1);
vector<int> b(N - 1);
vector<int> adj[N];
for (int i = 0; i < N - 1; ++i) {
cin >> a[i] >> b[i];
adj[a[i]].push_back(b[i]);
adj[b[i]].push_back(a[i]);
}
string message = "";
vector<int> l;
for(int i=0;i<N;i++) {
if(adj[i].size()==1) {
int x = adj[i][0];
l.push_back(i);
if(message.length()==0) {
if(i>x)message+="1";
else message+="0";
}
}
}
cout << message << endl;
for (int i = 0; i < N - 1; ++i) {
cout << l[i] << endl;
}
} else {
cin.ignore(100, '\n');
string message;
getline(cin, message);
int a,b; cin>>a>>b;
int center;
bool guess_a = true;
if(message=="1") {
guess_a = false;
center=a;
}
else {
guess_a=true;
center=b;
}
if (guess_a) {
cout << a << endl;
} else {
cout << b << endl;
}
for (int i = 1; i < N - 1; ++i) {
int a, b;
cin >> a >> b;
bool guess_a = true;
if(a==center) guess_a=false;
else guess_a=true;
if (guess_a) {
cout << a << endl;
} else {
cout << b << endl;
}
}
}
return 0;
}
