题解 | 明明的随机数

#include <iostream>
#include <set>
using namespace std;

int main() {
    int a;
    set<int> s;
    int count = 0;
    cin >> count;
    int num = 0;

    // 输入
    while (cin >> a) { 
        if (a < 1 || a > 500)
        {
            break;
        }

        s.insert(a);
        ++num;

        if (num >= count) {
            break;
        }
    }

    // 输出
    set<int>::const_iterator it = s.begin();
    for (; it != s.end(); ++it) {
        cout << *it << endl;
    }
}