public static void main ( String [ ] args ) {
  Scanner input = new Scanner ( System . in ) ;
  int x = input . nextInt ( ) ;
  int counter = 0 ;
  int counter2 = 1 ;
  int [ ] y = new int [ x ] ;
  for ( int i = 0 ;
  i < y . length ;
  i ++ ) {
    y [ i ] = input . nextInt ( ) ;
    counter ++ ;
  }
  for ( int c = 0 ;
  c < counter - 1 ;
  c ++ ) {
    if ( y [ c ] != y [ c + 1 ] ) {
      counter2 ++ ;
    }
  }
  System . out . println ( counter2 ) ;
}

public static void main ( String [ ] args ) { Scanner input = new Scanner ( System . in ) ; int x = input . nextInt ( ) ; int counter = 0 ; int counter2 = 1 ; int [ ] y = new int [ x ] ; for ( int i = 0 ; i < y . length ; i ++ ) { y [ i ] = input . nextInt ( ) ; counter ++ ; } for ( int c = 0 ; c < counter - 1 ; c ++ ) { if ( y [ c ] != y [ c + 1 ] ) { counter2 ++ ; } } System . out . println ( counter2 ) ; }
(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: (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: (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: (field_access object: (identifier) field: (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)))) (expression_statement (update_expression (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: (binary_expression left: (identifier) right: (decimal_integer_literal))) update: (update_expression (identifier)) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (array_access array: (identifier) index: (binary_expression left: (identifier) right: (decimal_integer_literal))))) consequence: (block (expression_statement (update_expression (identifier))))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (identifier))))))