@[liaoxueyi](/user/703319) 开O2+换成手打数组
by _buzhidao_ @ 2023-06-29 15:03:35
@[_buzhidao_](/user/917775)
手打数组一样
by Sylvia_starx @ 2023-06-29 15:05:29
而且比赛~~~
by Sylvia_starx @ 2023-06-29 15:05:48
@[liaoxueyi](/user/703319) %%%
by _buzhidao_ @ 2023-06-29 15:08:20
？
by Sylvia_starx @ 2023-06-29 15:09:26
AC了
```c
#include<bits/stdc++.h>
using namespace std;
const int N = 5e4 + 5;
int n,a[N],t;
unordered_map<int,bool> mp;
int main()
{
cin>>t;
while(t--)
{
cin>>n;
mp.clear();
for(int i=1;i<=n;i++)
cin>>a[i];
for(int i=1;i<=n;i++)
{
if(mp[a[i]] == 0)
{
cout<<a[i]<<" ";
mp[a[i]] = 1;
}
}
cout<<"\n";
}
return 0;
}
```
但不太知道为啥
by Sylvia_starx @ 2023-06-29 15:26:46