```cpp
#include<bits/stdc++.h>
using namespace std;
const int mn=0x3f3f3f3f;
struct node
{
int id,val;
}a[50001];
int n,t,sum;
bool cmp(node x,node y)
{
return x.val<y.val;
}
bool cmpp(node x,node y)
{
return x.id<y.id;
}
int main()
{
ios::sync_with_stdio(false);
cin.tie(0);
cin>>t;
a[0].val=-mn;
while(t--)
{
cin>>n;
memset(a,0,sizeof(a));
for(int i=1;i<=n;i++)
{
cin>>a[i].val;
a[i].id=i;
}
sort(a+1,a+n+1,cmp);
for(int i=1;i<=n;i++)//去重
{
if(a[i].val!=sum)
{
sum=a[i].val;
}
else
{
a[i].id=mn;
}
}
sort(a+1,a+n+1,cmpp);
for(int i=1;i<=n;i++)//还原顺序
{
if(a[i].id==mn)
{
break;
}
cout<<a[i].val<<' ';
}
cout<<endl;
}
return 0;
}
```
by xh001 @ 2023-03-13 22:09:47
是TLE还是WA
by LBYYSM_123 @ 2023-03-13 23:29:58
WA
by xh001 @ 2023-03-18 15:44:31