public static void main ( String [ ] $ ) {
  Scanner s = new Scanner ( System . in ) ;
  int n = s . nextInt ( ) ;
  long x = s . nextInt ( ) ;
  long [ ] [ ] a = new long [ n ] [ n ] ;
  Arrays . setAll ( a [ 0 ] , i -> s . nextLong ( ) ) ;
  for ( int j = 0 ;
  j < n ;
  ++ j ) {
    for ( int i = 1 ;
    i < n ;
    ++ i ) {
      a [ i ] [ j ] = Math . min ( a [ i - 1 ] [ j ] , a [ 0 ] [ ( j - i + n ) % n ] ) ;
    }
  }
  System . out . println ( IntStream . range ( 0 , n ) . mapToLong ( i -> i * x + Arrays . stream ( a [ i ] ) . sum ( ) ) . min ( ) . getAsLong ( ) ) ;
}

public static void main ( String [ ] $ ) { Scanner s = new Scanner ( System . in ) ; int n = s . nextInt ( ) ; long x = s . nextInt ( ) ; long [ ] [ ] a = new long [ n ] [ n ] ; Arrays . setAll ( a [ 0 ] , i -> s . nextLong ( ) ) ; for ( int j = 0 ; j < n ; ++ j ) { for ( int i = 1 ; i < n ; ++ i ) { a [ i ] [ j ] = Math . min ( a [ i - 1 ] [ j ] , a [ 0 ] [ ( j - i + n ) % n ] ) ; } } System . out . println ( IntStream . range ( 0 , n ) . mapToLong ( i -> i * x + Arrays . stream ( a [ i ] ) . sum ( ) ) . min ( ) . getAsLong ( ) ) ; }
(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: (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)) dimensions: (dimensions_expr (identifier))))) (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (array_access array: (identifier) index: (decimal_integer_literal)) (lambda_expression parameters: (identifier) body: (method_invocation object: (identifier) name: (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 (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: (array_access array: (identifier) index: (identifier)) index: (identifier)) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (array_access array: (array_access array: (identifier) index: (binary_expression left: (identifier) right: (decimal_integer_literal))) index: (identifier)) (array_access array: (array_access array: (identifier) index: (decimal_integer_literal)) index: (binary_expression left: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (identifier))) right: (identifier))))))))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (method_invocation object: (method_invocation object: (method_invocation object: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (decimal_integer_literal) (identifier))) name: (identifier) arguments: (argument_list (lambda_expression parameters: (identifier) body: (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (method_invocation object: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (array_access array: (identifier) index: (identifier)))) name: (identifier) arguments: (argument_list)))))) name: (identifier) arguments: (argument_list)) name: (identifier) arguments: (argument_list)))))))