- juxq's blog
STL 经典例题
- 2023-7-13 22:22:57 @
明明随机数
#include <bits/stdc++.h>
using namespace std;
int n, x;
set<int> k;
int main() {
cin >> n;
while(n--){
cin >> x;
k.insert(x);
}
cout << k.size() << endl;
for(auto p : k){
cout << p << " ";
}
return 0;
}