29 lines
463 B
C++
29 lines
463 B
C++
#include <bits/stdc++.h>
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using namespace std;
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int main() {
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ios_base::sync_with_stdio(false);
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cin.tie(NULL);
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freopen("B3.INP", "r", stdin);
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map<string, char> hash;
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int q;
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cin >> q;
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for (int i = 0; i < q; i++) {
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string a;
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cin >> a;
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// cout << a;
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if (hash.find(a) == hash.end()) {
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hash[a] = 1;
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} else {
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hash[a] = 0;
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}
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}
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for (const auto i : hash) {
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if (i.second == 1)
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cout << i.first << '\n';
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}
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}
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