public static void main ( String [ ] args ) {
  Scanner sc = new Scanner ( System . in ) ;
  int n = sc . nextInt ( ) ;
  int days = 0 ;
  int mysteryExplainedOnPage = 0 ;
  for ( int page = 1 ;
  page <= n ;
  page ++ ) {
    int temp = sc . nextInt ( ) ;
    mysteryExplainedOnPage = Math . max ( temp , mysteryExplainedOnPage ) ;
    if ( mysteryExplainedOnPage <= page ) {
      days ++ ;
    }
    else {
      mysteryExplainedOnPage = Math . max ( mysteryExplainedOnPage , temp ) ;
    }
  }
  System . out . println ( days ) ;
}

public static void main ( String [ ] args ) { Scanner sc = new Scanner ( System . in ) ; int n = sc . nextInt ( ) ; int days = 0 ; int mysteryExplainedOnPage = 0 ; for ( int page = 1 ; page <= n ; page ++ ) { int temp = sc . nextInt ( ) ; mysteryExplainedOnPage = Math . max ( temp , mysteryExplainedOnPage ) ; if ( mysteryExplainedOnPage <= page ) { days ++ ; } else { mysteryExplainedOnPage = Math . max ( mysteryExplainedOnPage , temp ) ; } } System . out . println ( days ) ; }
(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))) (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 (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (expression_statement (assignment_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier) (identifier))))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (identifier))) consequence: (block (expression_statement (update_expression (identifier)))) alternative: (block (expression_statement (assignment_expression left: (identifier) right: (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 (identifier))))))