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B.cpp
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B.cpp
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#include<bits/stdc++.h>
#include<string>
using namespace std;
#define fastio ios_base::sync_with_stdio(false);cin.tie(NULL)
int main()
{
fastio;
int t,n,i,cnt,x;
cin>>t;
while(t--)
{
cin>>n;
cnt=0;
vector<int> vect;
for(i=0;i<n;i++)
{
cin>>x;
vect.push_back(x);
}
for(i=0;i<n;i++)
{
if(i==0 && vect[n-1]==vect[1])
{
cnt++;
}
else if(i==n-1 && vect[n-2]==vect[0])
{
cnt++;
}
else if(vect[i-1]==vect[i+1])
cnt++;
}
if(cnt==n)
cout<<n/2+1<<"\n";
else
cout<<n<<"\n";
}
return 0;
}