public static void main ( String [ ] args ) {
  Scanner sc = new Scanner ( System . in ) ;
  while ( sc . hasNextInt ( ) ) {
    int N = sc . nextInt ( ) ;
    int [ ] t = new int [ N ] ;
    int max = Integer . MIN_VALUE ;
    int maxIdx = - 1 ;
    for ( int i = 0 ;
    i < N ;
    i ++ ) {
      t [ i ] = sc . nextInt ( ) ;
      int abs = Math . abs ( t [ i ] ) ;
      if ( max < abs ) {
        max = abs ;
        maxIdx = i ;
      }
    }
    System . out . println ( N * 2 - 1 ) ;
    for ( int i = 0 ;
    i < N ;
    i ++ ) {
      System . out . println ( ( maxIdx + 1 ) + " " + ( i + 1 ) ) ;
    }
    for ( int i = 0 ;
    i < N - 1 ;
    i ++ ) {
      if ( t [ maxIdx ] > 0 ) {
        System . out . println ( ( i + 1 ) + " " + ( i + 2 ) ) ;
      }
      else {
        System . out . println ( ( N - i ) + " " + ( N - i - 1 ) ) ;
      }
    }
  }
}

public static void main ( String [ ] args ) { Scanner sc = new Scanner ( System . in ) ; while ( sc . hasNextInt ( ) ) { int N = sc . nextInt ( ) ; int [ ] t = new int [ N ] ; int max = Integer . MIN_VALUE ; int maxIdx = - 1 ; for ( int i = 0 ; i < N ; i ++ ) { t [ i ] = sc . nextInt ( ) ; int abs = Math . abs ( t [ i ] ) ; if ( max < abs ) { max = abs ; maxIdx = i ; } } System . out . println ( N * 2 - 1 ) ; for ( int i = 0 ; i < N ; i ++ ) { System . out . println ( ( maxIdx + 1 ) + " ▁ " + ( i + 1 ) ) ; } for ( int i = 0 ; i < N - 1 ; i ++ ) { if ( t [ maxIdx ] > 0 ) { System . out . println ( ( i + 1 ) + " ▁ " + ( i + 2 ) ) ; } else { System . out . println ( ( N - i ) + " ▁ " + ( N - i - 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)))))) (while_statement condition: (parenthesized_expression (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))) body: (block (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: (integral_type) dimensions: (dimensions)) declarator: (variable_declarator name: (identifier) value: (array_creation_expression type: (integral_type) dimensions: (dimensions_expr (identifier))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (field_access object: (identifier) field: (identifier)))) (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: (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)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (array_access array: (identifier) index: (identifier)))))) (if_statement condition: (parenthesized_expression (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: (identifier) right: (decimal_integer_literal)) right: (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 (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (binary_expression left: (binary_expression left: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) right: (string_literal)) right: (parenthesized_expression (binary_expression left: (identifier) right: (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: (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: (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: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) right: (string_literal)) right: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal)))))))) alternative: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (binary_expression left: (binary_expression left: (parenthesized_expression (binary_expression left: (identifier) right: (identifier))) right: (string_literal)) right: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (decimal_integer_literal)))))))))))))))