public static void main ( String [ ] args ) throws Exception {
  BufferedReader br = new BufferedReader ( new InputStreamReader ( System . in ) ) ;
  int n = Integer . parseInt ( br . readLine ( ) ) ;
  List < Integer > boxes = new ArrayList ( ) ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) {
    boxes . add ( Integer . parseInt ( br . readLine ( ) ) ) ;
  }
  List < Integer > mtns = new ArrayList ( ) ;
  for ( Integer box : boxes ) {
    int min = 100000 ;
    int index = - 1 ;
    for ( int i = 0 ;
    i < mtns . size ( ) ;
    i ++ ) {
      int diff = mtns . get ( i ) - box ;
      if ( diff >= 0 && diff < min ) {
        min = diff ;
        index = i ;
      }
    }
    if ( min == 100000 ) {
      mtns . add ( box ) ;
    }
    else mtns . set ( index , box ) ;
  }
  System . out . println ( mtns . size ( ) ) ;
}

public static void main ( String [ ] args ) throws Exception { BufferedReader br = new BufferedReader ( new InputStreamReader ( System . in ) ) ; int n = Integer . parseInt ( br . readLine ( ) ) ; List < Integer > boxes = new ArrayList ( ) ; for ( int i = 0 ; i < n ; i ++ ) { boxes . add ( Integer . parseInt ( br . readLine ( ) ) ) ; } List < Integer > mtns = new ArrayList ( ) ; for ( Integer box : boxes ) { int min = 100000 ; int index = - 1 ; for ( int i = 0 ; i < mtns . size ( ) ; i ++ ) { int diff = mtns . get ( i ) - box ; if ( diff >= 0 && diff < min ) { min = diff ; index = i ; } } if ( min == 100000 ) { mtns . add ( box ) ; } else mtns . set ( index , box ) ; } System . out . println ( mtns . size ( ) ) ; }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (array_type element: (type_identifier) dimensions: (dimensions)) name: (identifier))) (throws (type_identifier)) body: (block (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (object_creation_expression type: (type_identifier) arguments: (argument_list (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 (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))))) (local_variable_declaration type: (generic_type (type_identifier) (type_arguments (type_identifier))) declarator: (variable_declarator name: (identifier) value: (object_creation_expression type: (type_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 (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))))))))) (local_variable_declaration type: (generic_type (type_identifier) (type_arguments (type_identifier))) declarator: (variable_declarator name: (identifier) value: (object_creation_expression type: (type_identifier) arguments: (argument_list)))) (enhanced_for_statement type: (type_identifier) name: (identifier) value: (identifier) body: (block (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: (unary_expression operand: (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 (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))) right: (identifier)))) (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (decimal_integer_literal)) 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))))))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) consequence: (block (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))))) alternative: (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier) (identifier))))))) (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)))))))