public static void main ( String [ ] args ) {
  Scanner s = new Scanner ( System . in ) ;
  String ch = s . next ( ) ;
  int k = 0 ;
  int m = 0 ;
  for ( int i = 0 ;
  i < ( ch . length ( ) ) ;
  i ++ ) {
    if ( ch . charAt ( i ) >= 'a' && ch . charAt ( i ) <= 'z' ) k = k + 1 ;
    else m = m + 1 ;
  }
  if ( m > k ) System . out . println ( ch . toUpperCase ( ) ) ;
  else System . out . println ( ch . toLowerCase ( ) ) ;
}

public static void main ( String [ ] args ) { Scanner s = new Scanner ( System . in ) ; String ch = s . next ( ) ; int k = 0 ; int m = 0 ; for ( int i = 0 ; i < ( ch . length ( ) ) ; i ++ ) { if ( ch . charAt ( i ) >= ' a ' && ch . charAt ( i ) <= ' z ' ) k = k + 1 ; else m = m + 1 ; } if ( m > k ) System . out . println ( ch . toUpperCase ( ) ) ; else System . out . println ( ch . toLowerCase ( ) ) ; }
(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: (type_identifier) declarator: (variable_declarator name: (identifier) value: (object_creation_expression type: (type_identifier) arguments: (argument_list (field_access object: (identifier) field: (identifier)))))) (local_variable_declaration type: (type_identifier) 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: (decimal_integer_literal))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (parenthesized_expression (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) update: (update_expression (identifier)) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))) right: (character_literal)) right: (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))) right: (character_literal)))) consequence: (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (decimal_integer_literal)))) alternative: (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (decimal_integer_literal))))))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (identifier))) consequence: (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))))) alternative: (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))))))))