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52 lines (52 loc) · 826 Bytes
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CF_1335_C.cpp
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52 lines (52 loc) · 826 Bytes
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#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
void solve()
{
int size;
cin>>size;
vector<int> vec(size);
for(int i=0; i<size; i++)
{
cin>>vec[i];
}
if(size==1)
{
cout<<0<<endl;
return;
}
unordered_map<int, int> umap;
for(int i=0; i<size; i++)
{
umap[vec[i]]++;
}
int m1=0;
for(auto &x:umap)
{
m1=max(m1, x.second);
}
int m2=umap.size();
// if(m1!=1)
// {
// m1--;
// }
// cout<<m1<<" "<<m2<<endl;
if(m1>=m2)
{
m1--;
}
int ans=min(m1, m2);
cout<<ans<<endl;
}
int main()
{
cin.tie(0);cin.sync_with_stdio(0);
cout.tie(0);cout.sync_with_stdio(0);
int t = 1;
cin >> t;
while (t--)
{
solve();
}
return 0;
}