#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx")
#pragma GCC optimize 03
#pragma GCC optimize("unroll-loops")

#include <iostream>
#include <algorithm>
#include <iterator>
#include <cmath>
#include <ctime>
#include <vector>
#include <deque>
#include <queue>
#include <set>
#include <map>
#include <stack>
#include <string>
#include <random>
#include <numeric>
#include <unordered_set>

typedef long long ll;
typedef long double lb;

#define fast ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
#define file_in freopen("input.txt", "r", stdin);
#define file_in_out freopen("knapsack.in", "r", stdin); freopen("knapsack.out", "w", stdout);
#define mp make_pair
#define all(x) (x).begin(), (x).end()
#define fi first
#define se second

using namespace std;

template<typename T>
istream& operator>>(istream &in, vector<T> &v) {
    for (auto &it : v) {
        in >> it;
    }
    return in;
}

template<typename T>
ostream& operator<<(ostream &out, vector<T> &v) {
    if (!v.empty()) {
        out << v.front();
        for (int i = 1; i < v.size(); ++i) {
            out << " " << v[i];
        }
    }
    return out;
}

struct unions {
    int m;
    vector<map<ll, int>> a;

    unions(int _m) {
        m = _m;
        a.resize(m + 1);
    }

    void ADD(int s, ll e) {
        a[s][e] = 1;
    }

    void DELETE(int s, ll e) {
        a[s][e] = 0;
    }

    void CLEAR(int s) {
        a[s].clear();
    }

    void LIST_SET(int s) {
        bool ans = false;
        for (auto element : a[s]) {
            if (element.se) {
                ans = true;
                cout << element.fi << " ";
            }
        }
        if (!ans) {
            cout << -1;
        }
        cout << "\n";
    }

    void LIST_SETS_OF(int e) {
        bool ans = false;
        for (int i = 0; i < m + 1; ++i) {
            if (a[i][e] != 0) {
                ans = true;
                cout << i << " ";
            }
        }
        if (!ans) {
            cout << -1;
        }
        cout << "\n";
    }
};

int main() {
    fast
//  file_in
//  file_in_out

    ll n;
    int m, k;
    cin >> n >> m >> k;
    unions u(m);
    string type;
    ll e, s;
    while (k--) {
        cin >> type;
        if (type == "ADD") {
            cin >> e >> s;
            u.ADD(s, e);
        }
        if (type == "DELETE") {
            cin >> e >> s;
            u.DELETE(s, e);
        }
        if (type == "CLEAR") {
            cin >> s;
            u.CLEAR(s);
        }
        if (type == "LISTSET") {
            cin >> s;
            u.LIST_SET(s);
        }
        if (type == "LISTSETSOF") {
            cin >> e;
            u.LIST_SETS_OF(e);
        }
    }
    return 0;
}