public static void main ( String [ ] args ) throws Exception {
  BufferedReader input = new BufferedReader ( new InputStreamReader ( System . in ) ) ;
  String o = input . readLine ( ) ;
  String e = input . readLine ( ) ;
  StringBuilder out = new StringBuilder ( ) ;
  for ( int i = 0 ;
  i < Math . max ( o . length ( ) , e . length ( ) ) ;
  i ++ ) {
    if ( i < o . length ( ) ) out . append ( o . charAt ( i ) ) ;
    if ( i < e . length ( ) ) out . append ( e . charAt ( i ) ) ;
  }
  System . out . println ( out ) ;
}

public static void main ( String [ ] args ) throws Exception { BufferedReader input = new BufferedReader ( new InputStreamReader ( System . in ) ) ; String o = input . readLine ( ) ; String e = input . readLine ( ) ; StringBuilder out = new StringBuilder ( ) ; for ( int i = 0 ; i < Math . max ( o . length ( ) , e . length ( ) ) ; i ++ ) { if ( i < o . length ( ) ) out . append ( o . charAt ( i ) ) ; if ( i < e . length ( ) ) out . append ( e . charAt ( i ) ) ; } System . out . println ( out ) ; }
(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) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (object_creation_expression type: (type_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: (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))))) update: (update_expression (identifier)) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) consequence: (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))))))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) consequence: (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))))))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (identifier))))))