P1059 [NOIP2006 普及组] 明明的随机数
题目传送门
#include
using namespace std;
const int N = 110;
int a[N];
int main() {
int n;
cin >> n;
for (int i = 0; i < n; i++) cin >> a[i];
//排序,从小到大
sort(a, a + n);
//去重
int cnt = unique(a, a + n) - a;
//剩余个数
cout << cnt << endl;
for (int i = 0; i < cnt; i++) cout << a[i] << " ";
return 0;
}