#include <bits/stdc++.h>
using namespace std;
set <int> s;
int main() {
ios::sync_with_stdio(false);
cin.tie(0), cout.tie(0);
int n, type, length;
cin >> n;
for (int i = 0; i < n; i++) {
cin >> type >> length;
switch (type) {
case 1: {
if (s.count(length)) cout << "Already Exist\n";
else s.insert(length);
break;
}
case 2: {
if (s.empty()) {
cout << "Empty\n";
continue;
}
if (s.count(length)) {
cout << length << "\n";
s.erase(length);
}
else {
cout << *s.begin() << "\n";
s.erase(s.begin());
}
break;
}
}
}
return 0;
}
不知道哪里出了问题
