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- #include<bits/stdc++.h>
- using namespace std;
- int main(){
- int tst;
- cin>>tst;
- while(tst--){
- int n, k;
- cin >> n >> k;
- map<int, int> m;
- int mx = 0;
- for (int i = 0; i < n; i++)
- {
- int x;
- cin >> x;
- m[x]++;
- mx = max(mx, m[x]);
- }
- if (mx >= k)
- cout << k - 1 << endl;
- else
- cout<<n<<endl;
- }
- }
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