#include <bits/stdc++.h>
using namespace std;

int a[11] = {0, 5, 8, 4, 12, 6, 8, 9, 5, 10, 3};

int main() {
    sort(a + 1, a + 1 + 10);                                                // 排序
    int al = unique(a + 1, a + 1 + 10) - a;                                 // 去重
    for (int i = 1; i <= al; i++) cout << "a[" << i << "]=" << a[i] << " "; // 输出
    return 0;
}