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C.cpp
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C.cpp
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#include<bits/stdc++.h>
using namespace std;
int main()
{
int t,n,i,m,count,u;
static int ara[200002];
cin>>t;
while(t--)
{
m=0;
count=0;
cin>>n;
for(i=0;i<n;i++)
cin>>ara[i];
sort(ara,ara+n);
for(i=0;i<n;i++)
{
if(i==0)
u=1;
else if(ara[i]!=ara[i-1])
u++;
}
for(i=0;i<n;i++)
{
if(i==0)
{
m=1;
count=1;
}
else if(ara[i]==ara[i-1])
{
count++;
m=max(count,m);
}
else
{
count=1;
}
}
/*for(i=1;i<=200000;i++)
{
if(i==1)
max=vect[i];
else if(vect[i]>max)
max=vect[i];
}*/
//cout<<u<<" "<<m<<endl;
if(u==m)
cout<<m-1<<endl;
else if(u>m)
cout<<m<<endl;
else
cout<<u<<endl;
}
return 0;
}