public static void main ( String args [ ] ) {
  Scanner sc = new Scanner ( System . in ) ;
  int L1 = - 1 , R1 = - 1 , L2 = - 1 , R2 = - 1 ;
  int n = sc . nextInt ( ) ;
  int m = sc . nextInt ( ) ;
  String [ ] table = new String [ n ] ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) {
    table [ i ] = sc . next ( ) ;
  }
  for ( int i = 0 ;
  i < n ;
  i ++ ) {
    for ( int j = 0 ;
    j < m ;
    j ++ ) {
      if ( table [ i ] . charAt ( j ) == 'B' ) {
        if ( L1 == - 1 ) {
          L2 = i ;
          L1 = i ;
          R2 = j ;
          R1 = j ;
        }
        else if ( i > L2 && j > R2 ) {
          L2 = i ;
          R2 = j ;
        }
      }
    }
  }
  System . out . println ( ( L1 + L2 + 2 ) / 2 + " " + ( R1 + R2 + 2 ) / 2 ) ;
}

public static void main ( String args [ ] ) { Scanner sc = new Scanner ( System . in ) ; int L1 = - 1 , R1 = - 1 , L2 = - 1 , R2 = - 1 ; int n = sc . nextInt ( ) ; int m = sc . nextInt ( ) ; String [ ] table = new String [ n ] ; for ( int i = 0 ; i < n ; i ++ ) { table [ i ] = sc . next ( ) ; } for ( int i = 0 ; i < n ; i ++ ) { for ( int j = 0 ; j < m ; j ++ ) { if ( table [ i ] . charAt ( j ) == ' B ' ) { if ( L1 == - 1 ) { L2 = i ; L1 = i ; R2 = j ; R1 = j ; } else if ( i > L2 && j > R2 ) { L2 = i ; R2 = j ; } } } } System . out . println ( ( L1 + L2 + 2 ) / 2 + " ▁ " + ( R1 + R2 + 2 ) / 2 ) ; }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (type_identifier) name: (identifier) dimensions: (dimensions))) 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: (integral_type) declarator: (variable_declarator name: (identifier) value: (unary_expression operand: (decimal_integer_literal))) declarator: (variable_declarator name: (identifier) value: (unary_expression operand: (decimal_integer_literal))) declarator: (variable_declarator name: (identifier) value: (unary_expression operand: (decimal_integer_literal))) declarator: (variable_declarator name: (identifier) value: (unary_expression operand: (decimal_integer_literal)))) (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: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (array_type element: (type_identifier) dimensions: (dimensions)) declarator: (variable_declarator name: (identifier) value: (array_creation_expression type: (type_identifier) 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 (assignment_expression left: (array_access array: (identifier) index: (identifier)) right: (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 (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 (if_statement condition: (parenthesized_expression (binary_expression left: (method_invocation object: (array_access array: (identifier) index: (identifier)) name: (identifier) arguments: (argument_list (identifier))) right: (character_literal))) consequence: (block (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (unary_expression operand: (decimal_integer_literal)))) consequence: (block (expression_statement (assignment_expression left: (identifier) right: (identifier))) (expression_statement (assignment_expression left: (identifier) right: (identifier))) (expression_statement (assignment_expression left: (identifier) right: (identifier))) (expression_statement (assignment_expression left: (identifier) right: (identifier)))) alternative: (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (binary_expression left: (identifier) right: (identifier)))) consequence: (block (expression_statement (assignment_expression left: (identifier) right: (identifier))) (expression_statement (assignment_expression left: (identifier) right: (identifier)))))))))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (binary_expression left: (binary_expression left: (binary_expression left: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (decimal_integer_literal))) right: (decimal_integer_literal)) right: (string_literal)) right: (binary_expression left: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (decimal_integer_literal))) right: (decimal_integer_literal))))))))