static String find_Square_369 ( String num ) {
  char a , b , c , d ;
  if ( num . charAt ( 0 ) == '3' ) {
    a = '1' ;
    b = '0' ;
    c = '8' ;
    d = '9' ;
  }
  else if ( num . charAt ( 0 ) == '6' ) {
    a = '4' ;
    b = '3' ;
    c = '5' ;
    d = '6' ;
  }
  else {
    a = '9' ;
    b = '8' ;
    c = '0' ;
    d = '1' ;
  }
  String result = "" ;
  int size = num . length ( ) ;
  for ( int i = 1 ;
  i < size ;
  i ++ ) result += a ;
  result += b ;
  for ( int i = 1 ;
  i < size ;
  i ++ ) result += c ;
  result += d ;
  return result ;
}

static String find_Square_369 ( String num ) { char a , b , c , d ; if ( num . charAt ( 0 ) == '3' ) { a = '1' ; b = '0' ; c = '8' ; d = '9' ; } else if ( num . charAt ( 0 ) == '6' ) { a = '4' ; b = '3' ; c = '5' ; d = '6' ; } else { a = '9' ; b = '8' ; c = '0' ; d = '1' ; } String result = " " ; int size = num . length ( ) ; for ( int i = 1 ; i < size ; i ++ ) result += a ; result += b ; for ( int i = 1 ; i < size ; i ++ ) result += c ; result += d ; return result ; }
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