#include <bits/stdc++.h>
using namespace std;
using ll = long long;
// #define int ll
// #define endl '\n'
#define F first
#define S second
#define all(x) begin(x), end(x)
#define rall(x) rbegin(x), rend(x)
#define sz(x) (int)(x).size()

struct Coord {
    int x1, y1, x2, y2;
    bool operator<(const Coord & c1) const {
        return y1 < c1.y2;
    }
};

void tc() {
    int n, m; cin >> n >> m;
    vector<Coord> v;
    for (int i = 0;i < m; i++) {
        Coord c;
        cin >> c.x1 >> c.y1 >> c.x2 >> c.y2;
        v.push_back(c);
    }
    sort(v.begin(), v.end());
    vector<int> perm(n);
    for (int i = 0; i < n; i++) {
        perm[i] = i;
    }
    for (auto [x1, y1, x2, y2] : v) {
        swap(perm[x1 - 1], perm[x2 - 1]);
    }
    vector<int> ans(n);
    for (int i = 0; i < n; i++) {
        ans[perm[i]] = i + 1;
    }
    for (int i = 0; i < n ;i++) {
        cout << ans[i] << endl;
    }
}

signed main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    tc();
}