题解 | #明明的随机数#

#include <iostream>
#include <algorithm>
#include <cstdio>
#include <cstring>
using namespace std;


bool hashTable[1001] = {false};
int main() {
    int n;
    int num[1001];

    scanf("%d", &n);
    for (int i = 0; i < n; i++) {
        int id;
        scanf("%d", &id);
        if (hashTable[id] == false) {
            num[i] = id;
            hashTable[id] = true;
        } else {
            i--;
            n--;
        }
    }

    sort(num, num + n);
    for (int i = 0; i < n; i++) {
        printf("%d\n", num[i]);
    }


}
// 64 位输出请用 printf("%lld")