static int minSum ( int arr [ ] , int n ) {
  int sum = arr [ 0 ] , prev = arr [ 0 ] ;
  for ( int i = 1 ;
  i < n ;
  i ++ ) {
    if ( arr [ i ] <= prev ) {
      prev = prev + 1 ;
      sum = sum + prev ;
    }
    else {
      sum = sum + arr [ i ] ;
      prev = arr [ i ] ;
    }
  }
  return sum ;
}

static int minSum ( int arr [ ] , int n ) { int sum = arr [ 0 ] , prev = arr [ 0 ] ; for ( int i = 1 ; i < n ; i ++ ) { if ( arr [ i ] <= prev ) { prev = prev + 1 ; sum = sum + prev ; } else { sum = sum + arr [ i ] ; prev = arr [ i ] ; } } return sum ; }
(method_declaration (modifiers) type: (integral_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: (integral_type) declarator: (variable_declarator name: (identifier) value: (array_access array: (identifier) index: (decimal_integer_literal))) declarator: (variable_declarator name: (identifier) value: (array_access array: (identifier) index: (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 (if_statement condition: (parenthesized_expression (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (identifier))) consequence: (block (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (decimal_integer_literal)))) (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (identifier))))) alternative: (block (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (array_access array: (identifier) index: (identifier))))) (expression_statement (assignment_expression left: (identifier) right: (array_access array: (identifier) index: (identifier)))))))) (return_statement (identifier))))