static void multiply ( int a [ ] [ ] , int b [ ] [ ] ) {
  int mul [ ] [ ] = new int [ 3 ] [ 3 ] ;
  for ( int i = 0 ;
  i < 3 ;
  i ++ ) {
    for ( int j = 0 ;
    j < 3 ;
    j ++ ) {
      mul [ i ] [ j ] = 0 ;
      for ( int k = 0 ;
      k < 3 ;
      k ++ ) mul [ i ] [ j ] += a [ i ] [ k ] * b [ k ] [ j ] ;
    }
  }
  for ( int i = 0 ;
  i < 3 ;
  i ++ ) for ( int j = 0 ;
  j < 3 ;
  j ++ ) a [ i ] [ j ] = mul [ i ] [ j ] ;
}

static void multiply ( int a [ ] [ ] , int b [ ] [ ] ) { int mul [ ] [ ] = new int [ 3 ] [ 3 ] ; for ( int i = 0 ; i < 3 ; i ++ ) { for ( int j = 0 ; j < 3 ; j ++ ) { mul [ i ] [ j ] = 0 ; for ( int k = 0 ; k < 3 ; k ++ ) mul [ i ] [ j ] += a [ i ] [ k ] * b [ k ] [ j ] ; } } for ( int i = 0 ; i < 3 ; i ++ ) for ( int j = 0 ; j < 3 ; j ++ ) a [ i ] [ j ] = mul [ i ] [ j ] ; }
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