static int func ( int x ) {
  if ( x == 0 ) return 0 ;
  if ( dp [ x ] == - 1 ) dp [ x ] = x + func ( x / 2 ) ;
  return dp [ x ] ;
}

static int func ( int x ) { if ( x == 0 ) return 0 ; if ( dp [ x ] == - 1 ) dp [ x ] = x + func ( x / 2 ) ; return dp [ x ] ; }
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