public static void main ( String [ ] args ) {
  int T = in . nextInt ( ) ;
  for ( int t = 0 ;
  t < T ;
  ++ t ) {
    int c = solve ( ) ;
    System . out . printf ( "Case #%d: %s%n" , t + 1 , c >= 0 ? Integer . toString ( c ) : "IMPOSSIBLE" ) ;
  }
}

public static void main ( String [ ] args ) { int T = in . nextInt ( ) ; for ( int t = 0 ; t < T ; ++ t ) { int c = solve ( ) ; System . out . printf ( " Case ▁ # % d : ▁ % s % n " , t + 1 , c >= 0 ? Integer . toString ( c ) : " IMPOSSIBLE " ) ; } }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (array_type element: (type_identifier) dimensions: (dimensions)) name: (identifier))) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (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 (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation name: (identifier) arguments: (argument_list)))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal) (binary_expression left: (identifier) right: (decimal_integer_literal)) (ternary_expression condition: (binary_expression left: (identifier) right: (decimal_integer_literal)) consequence: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))) alternative: (string_literal)))))))))