public static void main ( String [ ] args ) {
  Scanner in = new Scanner ( System . in ) ;
  int a [ ] = new int [ 4 ] ;
  for ( int i = 0 ;
  i < 4 ;
  i ++ ) {
    a [ i ] = in . nextInt ( ) ;
  }
  String s = in . next ( ) ;
  int t = 0 ;
  for ( int i = 0 ;
  i < s . length ( ) ;
  i ++ ) {
    t += a [ Integer . parseInt ( String . valueOf ( s . charAt ( i ) ) ) - 1 ] ;
  }
  System . out . println ( t ) ;
}

public static void main ( String [ ] args ) { Scanner in = new Scanner ( System . in ) ; int a [ ] = new int [ 4 ] ; for ( int i = 0 ; i < 4 ; i ++ ) { a [ i ] = in . nextInt ( ) ; } String s = in . next ( ) ; int t = 0 ; for ( int i = 0 ; i < s . length ( ) ; i ++ ) { t += a [ Integer . parseInt ( String . valueOf ( s . charAt ( i ) ) ) - 1 ] ; } System . out . println ( t ) ; }
(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) dimensions: (dimensions) value: (array_creation_expression type: (integral_type) dimensions: (dimensions_expr (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: (decimal_integer_literal)) 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: (type_identifier) 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))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))) update: (update_expression (identifier)) body: (block (expression_statement (assignment_expression left: (identifier) right: (array_access array: (identifier) index: (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))))))) right: (decimal_integer_literal))))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (identifier))))))