55 lines
1.2 KiB
C++
55 lines
1.2 KiB
C++
#include <iostream>
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#include <set>
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#include <string>
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#include <algorithm>
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#include <vector>
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#include <iterator>
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using namespace std;
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void fastio() {
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ios_base::sync_with_stdio(false);
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cin.tie(nullptr);
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cout.tie(nullptr);
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}
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int main() {
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fastio();
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int n, m;
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cin >> n >> m;
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auto 듣도못한사람 = new set<string>();
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auto 보도못한사람 = new set<string>();
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for (auto i = 0; i < n; i++) {
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string name;
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cin >> name;
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듣도못한사람->insert(name);
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}
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for (auto j = 0; j < m; j++) {
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string name;
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cin >> name;
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보도못한사람->insert(name);
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}
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auto 듣도보도못한사람 = new vector<string>();
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set_intersection(
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듣도못한사람->begin(), 듣도못한사람->end(),
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보도못한사람->begin(), 보도못한사람->end(),
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back_inserter(*듣도보도못한사람)
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);
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cout << 듣도보도못한사람->size() << "\n";
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for (auto name: *듣도보도못한사람) {
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cout << name << "\n";
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}
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delete 듣도못한사람;
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delete 보도못한사람;
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delete 듣도보도못한사람;
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} |