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chfpln.cpp
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chfpln.cpp
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#include <bits/stdc++.h>
using namespace std;
#define lli long long int
int main()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL);
// #ifndef ONLINE_JUDGE
// freopen("input.txt","r",stdin);
// freopen("output.txt","w",stdout);
// #endif
lli t,z;
cin>>t;
for(z=1;z<=t;z++)
{
long long int n;
cin>>n;
long long int array[100005]={0};
long long int maximum_points[100005]={0};
for(int i=2;i<100005;i++)
{
maximum_points[i]=i-1;
}
long long int a=0;
for(int i=0;i<n;i++)
{
cin>>a;
array[a]=array[a]+1;
}
long long int ans=0;
for(int i=0;i<100005;i++)
{
if(maximum_points[i]<array[i])
{
ans=ans+maximum_points[i];
}
else
{
ans=ans+array[i];
}
}
cout<<ans<<endl;
}
return 0;
}