public static void main ( String [ ] args ) {
  Scanner sc = new Scanner ( System . in ) ;
  int cases = sc . nextInt ( ) ;
  for ( int caze = 1 ;
  caze <= cases ;
  caze ++ ) {
    int N = sc . nextInt ( ) ;
    int P = sc . nextInt ( ) ;
    int [ ] cant = new int [ P ] ;
    for ( int i = 0 ;
    i < N ;
    i ++ ) {
      cant [ sc . nextInt ( ) % P ] ++ ;
    }
    int ans = cant [ 0 ] ;
    if ( P == 2 ) {
      ans += ( cant [ 1 ] + 1 ) / 2 ;
    }
    else if ( P == 3 ) {
      ans += Math . min ( cant [ 1 ] , cant [ 2 ] ) ;
      int left = Math . max ( cant [ 1 ] , cant [ 2 ] ) - Math . min ( cant [ 1 ] , cant [ 2 ] ) ;
      ans += ( left + 2 ) / 3 ;
    }
    else {
      ans += Math . min ( cant [ 1 ] , cant [ 3 ] ) ;
      int left = Math . max ( cant [ 1 ] , cant [ 3 ] ) - Math . min ( cant [ 1 ] , cant [ 3 ] ) ;
      ans += cant [ 2 ] / 2 ;
      boolean extra2 = cant [ 2 ] % 2 == 1 ;
      if ( left >= 2 && extra2 ) {
        ans ++ ;
        left -= 2 ;
        extra2 = false ;
      }
      if ( extra2 ) left ++ ;
      ans += ( left + 3 ) / 4 ;
    }
    System . out . println ( "Case #" + caze + ": " + ans ) ;
  }
}

public static void main ( String [ ] args ) { Scanner sc = new Scanner ( System . in ) ; int cases = sc . nextInt ( ) ; for ( int caze = 1 ; caze <= cases ; caze ++ ) { int N = sc . nextInt ( ) ; int P = sc . nextInt ( ) ; int [ ] cant = new int [ P ] ; for ( int i = 0 ; i < N ; i ++ ) { cant [ sc . nextInt ( ) % P ] ++ ; } int ans = cant [ 0 ] ; if ( P == 2 ) { ans += ( cant [ 1 ] + 1 ) / 2 ; } else if ( P == 3 ) { ans += Math . min ( cant [ 1 ] , cant [ 2 ] ) ; int left = Math . max ( cant [ 1 ] , cant [ 2 ] ) - Math . min ( cant [ 1 ] , cant [ 2 ] ) ; ans += ( left + 2 ) / 3 ; } else { ans += Math . min ( cant [ 1 ] , cant [ 3 ] ) ; int left = Math . max ( cant [ 1 ] , cant [ 3 ] ) - Math . min ( cant [ 1 ] , cant [ 3 ] ) ; ans += cant [ 2 ] / 2 ; boolean extra2 = cant [ 2 ] % 2 == 1 ; if ( left >= 2 && extra2 ) { ans ++ ; left -= 2 ; extra2 = false ; } if ( extra2 ) left ++ ; ans += ( left + 3 ) / 4 ; } System . out . println ( " Case ▁ # " + caze + " : ▁ " + ans ) ; } }
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(integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (array_type element: (integral_type) dimensions: (dimensions)) declarator: (variable_declarator name: (identifier) value: (array_creation_expression type: (integral_type) dimensions: (dimensions_expr (identifier))))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (identifier)) update: (update_expression (identifier)) body: (block (expression_statement (update_expression (array_access array: (identifier) index: (binary_expression 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(decimal_integer_literal))))) alternative: (block (expression_statement (assignment_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (array_access array: (identifier) index: (decimal_integer_literal)) (array_access array: (identifier) index: (decimal_integer_literal)))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (array_access array: (identifier) index: (decimal_integer_literal)) (array_access array: (identifier) index: (decimal_integer_literal)))) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (array_access array: (identifier) index: (decimal_integer_literal)) (array_access array: (identifier) index: (decimal_integer_literal))))))) (expression_statement (assignment_expression left: (identifier) 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