text: #include <bits/stdc++.h>
  using namespace std;
  
  // shortened type names
  typedef unsigned long long ull;
  typedef vector<int> vi;
  typedef pair<int, int> pi;
  
  
  vector<int> read_vector(ifstream& fin, int N) {
      vector<int> C(N);
      for (int i = 0; i < N; i++) {
          fin >> C[i];
      }
      return C;
  }
  
  int solution(int N) {
      // solution here
      return 0;
  }
  
  int main() {
      ios::sync_with_stdio(0);
      cin.tie(0);
  
      ifstream fin("input_file.txt");
      ofstream fout("output_file.txt");
  
      int tests;
      fin >> tests;
  
      for (int t = 0; t < tests; t++) {
          // code here
          int N;
          fin >> N;
          
          int soln = solution(N);
  
          fout << "Case #" << t+1 << ": " << soln << "\n";
      }
  
      fin.close();
      fout.close();
      
      cout.flush();
      return 0;
  }