public static void main ( String [ ] args ) {
  Scanner sc = new Scanner ( System . in ) ;
  int digit = - 1 ;
  for ( int i = 0 ;
  i <= 10 ;
  i ++ ) {
    ask ( dec ( i ) ) ;
    if ( sc . nextLine ( ) . equals ( "N" ) ) {
      digit = i ;
      break ;
    }
  }
  if ( digit == - 1 ) {
    for ( int i = 0 ;
    i <= 10 ;
    i ++ ) {
      ask ( 2 * dec ( i ) ) ;
      if ( sc . nextLine ( ) . equals ( "Y" ) ) {
        answer ( dec ( i ) ) ;
        System . exit ( 0 ) ;
      }
    }
  }
  else {
    long min = dec ( digit - 1 ) ;
    long max = dec ( digit ) - 1 ;
    while ( min < max ) {
      long next = ( min + max ) / 2 ;
      ask ( next * 10 ) ;
      if ( sc . nextLine ( ) . equals ( "Y" ) ) {
        max = next ;
      }
      else {
        min = next + 1 ;
      }
    }
    answer ( min ) ;
    System . exit ( 0 ) ;
  }
}

public static void main ( String [ ] args ) { Scanner sc = new Scanner ( System . in ) ; int digit = - 1 ; for ( int i = 0 ; i <= 10 ; i ++ ) { ask ( dec ( i ) ) ; if ( sc . nextLine ( ) . equals ( " N " ) ) { digit = i ; break ; } } if ( digit == - 1 ) { for ( int i = 0 ; i <= 10 ; i ++ ) { ask ( 2 * dec ( i ) ) ; if ( sc . nextLine ( ) . equals ( " Y " ) ) { answer ( dec ( i ) ) ; System . exit ( 0 ) ; } } } else { long min = dec ( digit - 1 ) ; long max = dec ( digit ) - 1 ; while ( min < max ) { long next = ( min + max ) / 2 ; ask ( next * 10 ) ; if ( sc . nextLine ( ) . equals ( " Y " ) ) { max = next ; } else { min = next + 1 ; } } answer ( min ) ; System . exit ( 0 ) ; } }
(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: (unary_expression operand: (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 (method_invocation name: (identifier) arguments: (argument_list (method_invocation name: (identifier) arguments: (argument_list (identifier)))))) (if_statement condition: (parenthesized_expression (method_invocation object: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)) name: (identifier) arguments: (argument_list (string_literal)))) consequence: (block (expression_statement (assignment_expression left: (identifier) right: (identifier))) (break_statement))))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (unary_expression operand: (decimal_integer_literal)))) consequence: (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: (decimal_integer_literal)) update: (update_expression (identifier)) body: (block (expression_statement (method_invocation name: (identifier) arguments: (argument_list (binary_expression left: (decimal_integer_literal) right: (method_invocation name: (identifier) arguments: (argument_list (identifier))))))) (if_statement condition: (parenthesized_expression (method_invocation object: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)) name: (identifier) arguments: (argument_list (string_literal)))) consequence: (block (expression_statement (method_invocation name: (identifier) arguments: (argument_list (method_invocation name: (identifier) arguments: (argument_list (identifier)))))) (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (decimal_integer_literal))))))))) alternative: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation name: (identifier) arguments: (argument_list (binary_expression left: (identifier) right: (decimal_integer_literal)))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (method_invocation name: (identifier) arguments: (argument_list (identifier))) right: (decimal_integer_literal)))) (while_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (identifier))) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (parenthesized_expression (binary_expression left: (identifier) right: (identifier))) right: (decimal_integer_literal)))) (expression_statement (method_invocation name: (identifier) arguments: (argument_list (binary_expression left: (identifier) right: (decimal_integer_literal))))) (if_statement condition: (parenthesized_expression (method_invocation object: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)) name: (identifier) arguments: (argument_list (string_literal)))) consequence: (block (expression_statement (assignment_expression left: (identifier) right: (identifier)))) alternative: (block (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (decimal_integer_literal)))))))) (expression_statement (method_invocation name: (identifier) arguments: (argument_list (identifier)))) (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (decimal_integer_literal))))))))