public static void main ( String [ ] args ) throws IOException {
  BufferedReader a = new BufferedReader ( new InputStreamReader ( System . in ) ) ;
  String f = a . readLine ( ) ;
  String d [ ] = f . split ( " " ) ;
  System . out . print ( d [ 0 ] . charAt ( 0 ) ) ;
  for ( int i = 1 ;
  i < d [ 0 ] . length ( ) ;
  i ++ ) {
    if ( d [ 0 ] . charAt ( i ) < d [ 1 ] . charAt ( 0 ) ) {
      System . out . print ( d [ 0 ] . charAt ( i ) ) ;
    }
    else {
      break ;
    }
  }
  System . out . println ( d [ 1 ] . charAt ( 0 ) ) ;
}

public static void main ( String [ ] args ) throws IOException { BufferedReader a = new BufferedReader ( new InputStreamReader ( System . in ) ) ; String f = a . readLine ( ) ; String d [ ] = f . split ( " ▁ " ) ; System . out . print ( d [ 0 ] . charAt ( 0 ) ) ; for ( int i = 1 ; i < d [ 0 ] . length ( ) ; i ++ ) { if ( d [ 0 ] . charAt ( i ) < d [ 1 ] . charAt ( 0 ) ) { System . out . print ( d [ 0 ] . charAt ( i ) ) ; } else { break ; } } System . out . println ( d [ 1 ] . charAt ( 0 ) ) ; }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (array_type element: (type_identifier) dimensions: (dimensions)) name: (identifier))) (throws (type_identifier)) body: (block (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (object_creation_expression type: (type_identifier) arguments: (argument_list (object_creation_expression type: (type_identifier) arguments: (argument_list (field_access object: (identifier) field: (identifier)))))))) (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: (type_identifier) declarator: (variable_declarator name: (identifier) dimensions: (dimensions) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (string_literal))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (method_invocation object: (array_access array: (identifier) index: (decimal_integer_literal)) name: (identifier) arguments: (argument_list (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: (array_access array: (identifier) index: (decimal_integer_literal)) name: (identifier) arguments: (argument_list))) update: (update_expression (identifier)) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (method_invocation object: (array_access array: (identifier) index: (decimal_integer_literal)) name: (identifier) arguments: (argument_list (identifier))) right: (method_invocation object: (array_access array: (identifier) index: (decimal_integer_literal)) name: (identifier) arguments: (argument_list (decimal_integer_literal))))) consequence: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (method_invocation object: (array_access array: (identifier) index: (decimal_integer_literal)) name: (identifier) arguments: (argument_list (identifier))))))) alternative: (block (break_statement))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (method_invocation object: (array_access array: (identifier) index: (decimal_integer_literal)) name: (identifier) arguments: (argument_list (decimal_integer_literal))))))))