func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int t;     cin >> t;     while (t--) {       int n, k, d;       cin >> n >> k >> d;       long long int a[n];       for (int i = 0; i < n; i++) {         cin >> a[i];       }       map<int, int> p;       long long int l = 0, size = 0, m = 99999999;       for (int i = 0; i < n; i++) {         if (i < d) {           if (p[a[i]] == 0) {             size++;           }           p[a[i]]++;           if (i == d - 1) {             m = min(m, size);           }         } else {           if (p[a[l]] == 1) {             size--;           }           p[a[l]]--;           l++;           if (p[a[i]] == 0) {             size++;           }           p[a[i]]++;           m = min(m, size);         }       }       cout << m << endl;     }     return 0;   }   