public static void main ( String [ ] args ) {
  InputReader in = new InputReader ( System . in ) ;
  int n = in . nextInt ( ) ;
  double R = in . nextDouble ( ) ;
  double r = in . nextDouble ( ) ;
  if ( n > 1 ) {
    if ( R >= r / Math . sin ( Math . toRadians ( 360.0 / n / 2 ) ) + r ) {
      System . out . println ( "YES" ) ;
    }
    else {
      System . out . println ( "NO" ) ;
    }
  }
  else {
    if ( R >= r || n <= 0 ) {
      System . out . println ( "YES" ) ;
    }
    else {
      System . out . println ( "NO" ) ;
    }
  }
}

public static void main ( String [ ] args ) { InputReader in = new InputReader ( System . in ) ; int n = in . nextInt ( ) ; double R = in . nextDouble ( ) ; double r = in . nextDouble ( ) ; if ( n > 1 ) { if ( R >= r / Math . sin ( Math . toRadians ( 360.0 / n / 2 ) ) + r ) { System . out . println ( " YES " ) ; } else { System . out . println ( " NO " ) ; } } else { if ( R >= r || n <= 0 ) { System . out . println ( " YES " ) ; } else { System . out . println ( " 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 (field_access object: (identifier) field: (identifier)))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (floating_point_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (floating_point_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) consequence: (block (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (binary_expression left: (binary_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (binary_expression left: (binary_expression left: (decimal_floating_point_literal) right: (identifier)) right: (decimal_integer_literal))))))) right: (identifier)))) consequence: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal))))) alternative: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal))))))) alternative: (block (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (binary_expression left: (identifier) right: (decimal_integer_literal)))) consequence: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal))))) alternative: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal))))))))))