static void find_idx ( int arr [ ] , int n ) {
  Vector answer = new Vector ( ) ;
  int sum = 0 ;
  for ( int i = n - 1 ;
  i >= 0 ;
  i -- ) {
    if ( sum == arr [ i ] ) {
      answer . add ( i ) ;
    }
    sum += arr [ i ] ;
  }
  if ( answer . size ( ) == 0 ) {
    System . out . println ( "-1" ) ;
    return ;
  }
  for ( int i = answer . size ( ) - 1 ;
  i >= 0 ;
  i -- ) System . out . print ( answer . get ( i ) + " " ) ;
}

static void find_idx ( int arr [ ] , int n ) { Vector answer = new Vector ( ) ; int sum = 0 ; for ( int i = n - 1 ; i >= 0 ; i -- ) { if ( sum == arr [ i ] ) { answer . add ( i ) ; } sum += arr [ i ] ; } if ( answer . size ( ) == 0 ) { System . out . println ( " - 1" ) ; return ; } for ( int i = answer . size ( ) - 1 ; i >= 0 ; i -- ) System . out . print ( answer . get ( i ) + " ▁ " ) ; }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier) dimensions: (dimensions)) (formal_parameter type: (integral_type) 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)))) (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: (binary_expression left: (identifier) right: (decimal_integer_literal)))) condition: (binary_expression left: (identifier) right: (decimal_integer_literal)) update: (update_expression (identifier)) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (array_access array: (identifier) index: (identifier)))) consequence: (block (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier)))))) (expression_statement (assignment_expression left: (identifier) right: (array_access array: (identifier) index: (identifier)))))) (if_statement condition: (parenthesized_expression (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)) right: (decimal_integer_literal))) consequence: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal)))) (return_statement))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)) right: (decimal_integer_literal)))) condition: (binary_expression left: (identifier) right: (decimal_integer_literal)) update: (update_expression (identifier)) body: (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))) right: (string_literal))))))))