题解 | #明明的随机数#

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

int main() {
    int N;
    cin >> N;
    vector<int> rand;
    vector<int> count(510);
    int i = 0, num;
    while(i < N){
        cin >> num;
        if(count[num] == 0){
            count[num]++;
        }
        i++;
    }
    for(int i = 0; i < 501; i++){
        if(count[i] > 0){
            rand.push_back(i);
        }
    }
    for(int i = 0; i < rand.size(); i++){
        cout<< rand[i] << endl;
    }

}
// 64 位输出请用 printf("%lld")