题解 | 序列中整数去重
#include <iostream>
using namespace std;
const int N = 1010;
int arr[N];
int main() {
int n;
cin >> n;
int m;
for(int i = 0;i < n;i++)
{
cin >> m;
arr[m]++;
if(arr[m] <= 1)
cout << m << " ";
}
}