[BZOJ2761]JLOI2011不重复的数字

我也想要这种省选题。。

#include<cstdio>#include<iostream>#include<map>using namespace std;map<int,int> a;int i,n,T,q;int main(){scanf("%d",&T);while (T--){scanf("%d",&n);a.clear();scanf("%d",&q);a[q]=1;printf("%d",q);for (i=2;i<=n;i++){scanf("%d",&q);if (a[q]!=1) a[q]=1,printf(" %d",q);}printf("\n");}}