I always get an error when i try to push back the map's value to the vector also when i try to output the vector's value.

Question

#include<bits/stdc++.h>
using namespace std;

#define pb push_back
#define ll int
#define mod 1000
#define for1(i,k,n) for(int i=k;i<n;i++)
#define for2(k,n) for(int j=k;j<n;j++)
#define E cout<<endl
#define maxn 10001

bool cmp(pair<ll, ll> &a, pair<ll, ll> &b)
{
return a.second < b.second;
}
int main()
{
////////////////////////////////////// start.................

ll t;
cin >> t;
while (t--)
{
ll n;
cin >> n;
ll arr[n + 1];
map<ll, ll> m;
for1(i, 0, n)
{
cin >> arr[i];
m[arr[i]]++;
}
vector < pair<ll, ll> > v;
for (auto i = m.begin(); i != m.end(); i++)
v.pb(i);
sort(v.begin(), v.end(), cmp);
for (auto i = v.begin(); i != v.end(); i++)
cout << i.second << " ";
cout << endl;
}

/////////////////////////////////end................................... ....
return 0;

}