static int countCubes ( int a , int b ) {
  int cnt = 0 ;
  for ( int i = a ;
  i <= b ;
  i ++ ) for ( int j = 1 ;
  j * j * j <= i ;
  j ++ ) if ( j * j * j == i ) cnt ++ ;
  return cnt ;
}

static int countCubes ( int a , int b ) { int cnt = 0 ; for ( int i = a ; i <= b ; i ++ ) for ( int j = 1 ; j * j * j <= i ; j ++ ) if ( j * j * j == i ) cnt ++ ; return cnt ; }
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