#include <bits/stdc++.h>
using namespace std;
using ll = long long;

struct Monkey {
    int boss;
    int num;
    int id;
    vector<int> members;
};

int A[10007] = {};
int B[10007] = {};
Monkey monkeys[10007] = {};

// bがaチームにマージされる
void merge(int a, int b) {
    monkeys[a].num += monkeys[b].num;
    for (auto v : monkeys[b].members) {
        monkeys[a].members.push_back(v);
        monkeys[v].boss = a;
        monkeys[v].num = monkeys[a].num;
    }
}

int main() {
    cin.tie(0);
    ios::sync_with_stdio(false);

    int N, M;
    cin >> N >> M;
    for (int i = 0; i < N; i++) {
        cin >> A[i] >> B[i];
    }

    for (int i = 1; i <= N; i++) {
        monkeys[i].boss = i;
        monkeys[i].num = 1;
        monkeys[i].id = i;
        monkeys[i].members.push_back(i);
    }

    for (int i = 0; i < N; i++) {
        int a = A[i];
        int b = B[i];
        int boss_a = monkeys[a].boss;
        int boss_b = monkeys[b].boss;
        if (boss_a == boss_b) {
            continue;
        } else if (monkeys[boss_a].num > monkeys[boss_b].num) {
            merge(boss_a, boss_b);
        } else if (monkeys[boss_a].num < monkeys[boss_b].num) {
            merge(boss_b, boss_a);
        } else {
            if (monkeys[boss_a].id < monkeys[boss_b].id) {
                merge(boss_a, boss_b);
            } else {
                merge(boss_b, boss_a);
            }
        }
    }

    for (int i = 1; i <= N; i++) {
        cout << monkeys[i].boss << endl;
    }

    return 0;
}