public static void main ( String [ ] args ) {
  Scanner scanner = new Scanner ( System . in ) ;
  String S = scanner . next ( ) ;
  int T = scanner . nextInt ( ) ;
  int x = 0 ;
  int y = 0 ;
  int count = 0 ;
  for ( int i = 0 ;
  i < S . length ( ) ;
  i ++ ) {
    if ( S . charAt ( i ) == 'L' ) {
      x += - 1 ;
    }
    if ( S . charAt ( i ) == 'R' ) {
      x += 1 ;
    }
    if ( S . charAt ( i ) == 'U' ) {
      y += 1 ;
    }
    if ( S . charAt ( i ) == 'D' ) {
      y += - 1 ;
    }
    if ( S . charAt ( i ) == '?' ) {
      count ++ ;
    }
  }
  if ( T == 1 ) {
    System . out . println ( Math . abs ( x ) + Math . abs ( y ) + count ) ;
  }
  if ( T == 2 ) {
    if ( Math . abs ( x ) + Math . abs ( y ) - count >= 0 ) {
      System . out . println ( Math . abs ( x ) + Math . abs ( y ) - count ) ;
    }
    else if ( Math . abs ( x ) + Math . abs ( y ) - count < 0 && ( Math . abs ( x ) + Math . abs ( y ) ) % 2 == count % 2 ) {
      System . out . println ( 0 ) ;
    }
    else {
      System . out . println ( 1 ) ;
    }
  }
}

public static void main ( String [ ] args ) { Scanner scanner = new Scanner ( System . in ) ; String S = scanner . next ( ) ; int T = scanner . nextInt ( ) ; int x = 0 ; int y = 0 ; int count = 0 ; for ( int i = 0 ; i < S . length ( ) ; i ++ ) { if ( S . charAt ( i ) == ' L ' ) { x += - 1 ; } if ( S . charAt ( i ) == ' R ' ) { x += 1 ; } if ( S . charAt ( i ) == ' U ' ) { y += 1 ; } if ( S . charAt ( i ) == ' D ' ) { y += - 1 ; } if ( S . charAt ( i ) == ' ? ' ) { count ++ ; } } if ( T == 1 ) { System . out . println ( Math . abs ( x ) + Math . abs ( y ) + count ) ; } if ( T == 2 ) { if ( Math . abs ( x ) + Math . abs ( y ) - count >= 0 ) { System . out . println ( Math . abs ( x ) + Math . abs ( y ) - count ) ; } else if ( Math . abs ( x ) + Math . abs ( y ) - count < 0 && ( Math . abs ( x ) + Math . abs ( y ) ) % 2 == count % 2 ) { System . out . println ( 0 ) ; } else { System . out . println ( 1 ) ; } } }
(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: (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))) (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: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))) update: (update_expression (identifier)) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))) right: (character_literal))) consequence: (block (expression_statement (assignment_expression left: (identifier) right: (unary_expression operand: (decimal_integer_literal)))))) (if_statement condition: (parenthesized_expression (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))) right: (character_literal))) consequence: (block (expression_statement (assignment_expression left: (identifier) right: (decimal_integer_literal))))) (if_statement condition: (parenthesized_expression (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))) right: (character_literal))) consequence: (block (expression_statement (assignment_expression left: (identifier) right: (decimal_integer_literal))))) (if_statement condition: (parenthesized_expression (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))) right: (character_literal))) consequence: (block (expression_statement (assignment_expression left: (identifier) right: (unary_expression operand: (decimal_integer_literal)))))) (if_statement condition: (parenthesized_expression (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))) right: (character_literal))) consequence: (block (expression_statement (update_expression (identifier))))))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) consequence: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (binary_expression left: (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier)))) right: (identifier))))))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) consequence: (block (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier)))) right: (identifier)) right: (decimal_integer_literal))) consequence: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (binary_expression left: (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier)))) right: (identifier)))))) alternative: (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (binary_expression left: (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier)))) right: (identifier)) right: (decimal_integer_literal)) right: (binary_expression left: (binary_expression left: (parenthesized_expression (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))))) right: (decimal_integer_literal)) right: (binary_expression left: (identifier) right: (decimal_integer_literal))))) consequence: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (decimal_integer_literal))))) alternative: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (decimal_integer_literal)))))))))))