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#include <bits/stdc++.h>
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using namespace std;
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int main() {
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    int m, n, k;
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    cin >> m >> n >> k;
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    set<int> a[n + 1];
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    set<int> b[m + 1];
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    for (int i = 0; i < k; ++i) {
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        string op;
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        cin >> op;
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        if (op == "ADD") {
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            int x, id;
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            cin >> x >> id;
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            a[id].insert(x);
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            b[x].insert(id);
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        } else if (op == "SHOWSET") {
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            int id;
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            cin >> id;
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            bool flag = false;
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            for (int x: a[id]) {
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                cout << x << " ";
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                flag = true;
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            }
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            if (!flag) {
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                cout << -1;
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            }
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            cout << endl;
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        } else {
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            int x;
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            cin >> x;
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            bool flag = false;
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            for (int id: b[x]) {
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                cout << id << " ";
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                flag = true;
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            }
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            if (!flag) {
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                cout << -1;
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            }
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            cout << endl;
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        }
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    }
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    return 0;
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}
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