public static void main ( String [ ] args ) {
  FastScanner fs = new FastScanner ( ) ;
  String s = fs . next ( ) , t = fs . next ( ) ;
  System . out . println ( ( s . equals ( new StringBuilder ( t ) . reverse ( ) . toString ( ) ) ) ? "YES" : "NO" ) ;
}

public static void main ( String [ ] args ) { FastScanner fs = new FastScanner ( ) ; String s = fs . next ( ) , t = fs . next ( ) ; System . out . println ( ( s . equals ( new StringBuilder ( t ) . reverse ( ) . toString ( ) ) ) ? " YES " : " NO " ) ; }
(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)))) (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (ternary_expression condition: (parenthesized_expression (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (method_invocation object: (method_invocation object: (object_creation_expression type: (type_identifier) arguments: (argument_list (identifier))) name: (identifier) arguments: (argument_list)) name: (identifier) arguments: (argument_list))))) consequence: (string_literal) alternative: (string_literal)))))))