public static void main ( String [ ] args ) {
  int n ;
  double R , r ;
  double eps = 1e-10 ;
  double PI = Math . acos ( - 1 ) ;
  Scanner in = new Scanner ( System . in ) ;
  while ( in . hasNext ( ) ) {
    n = in . nextInt ( ) ;
    R = in . nextInt ( ) ;
    r = in . nextInt ( ) ;
    if ( n == 1 ) {
      if ( R >= r ) System . out . println ( "YES" ) ;
      else System . out . println ( "NO" ) ;
      continue ;
    }
    double tmp = Math . asin ( r / ( R - r ) ) ;
    if ( PI / tmp - n > - eps ) System . out . println ( "YES" ) ;
    else System . out . println ( "NO" ) ;
  }
}

public static void main ( String [ ] args ) { int n ; double R , r ; double eps = 1e-10 ; double PI = Math . acos ( - 1 ) ; Scanner in = new Scanner ( System . in ) ; while ( in . hasNext ( ) ) { n = in . nextInt ( ) ; R = in . nextInt ( ) ; r = in . nextInt ( ) ; if ( n == 1 ) { if ( R >= r ) System . out . println ( " YES " ) ; else System . out . println ( " NO " ) ; continue ; } double tmp = Math . asin ( r / ( R - r ) ) ; if ( PI / tmp - n > - eps ) System . out . println ( " YES " ) ; else System . out . println ( " NO " ) ; } }
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