static int sumOfElements ( int arr [ ] , int n ) {
  boolean prime [ ] = new boolean [ n + 1 ] ;
  int i , j ;
  HashMap < Integer , Integer > m = new HashMap < Integer , Integer > ( ) ;
  for ( i = 0 ;
  i < n ;
  i ++ ) {
    if ( m . get ( arr [ i ] ) == null ) m . put ( arr [ i ] , 1 ) ;
    else m . put ( arr [ i ] , m . get ( arr [ i ] ) + 1 ) ;
  }
  int sum = 0 ;
  Iterator hmIterator = m . entrySet ( ) . iterator ( ) ;
  while ( hmIterator . hasNext ( ) ) {
    Map . Entry mapElement = ( Map . Entry ) hmIterator . next ( ) ;
    if ( ( ( int ) mapElement . getValue ( ) ) >= ( ( int ) mapElement . getKey ( ) ) ) {
      sum += ( ( int ) mapElement . getKey ( ) ) ;
    }
  }
  return sum ;
}

static int sumOfElements ( int arr [ ] , int n ) { boolean prime [ ] = new boolean [ n + 1 ] ; int i , j ; HashMap < Integer , Integer > m = new HashMap < Integer , Integer > ( ) ; for ( i = 0 ; i < n ; i ++ ) { if ( m . get ( arr [ i ] ) == null ) m . put ( arr [ i ] , 1 ) ; else m . put ( arr [ i ] , m . get ( arr [ i ] ) + 1 ) ; } int sum = 0 ; Iterator hmIterator = m . entrySet ( ) . iterator ( ) ; while ( hmIterator . hasNext ( ) ) { Map . Entry mapElement = ( Map . Entry ) hmIterator . next ( ) ; if ( ( ( int ) mapElement . getValue ( ) ) >= ( ( int ) mapElement . getKey ( ) ) ) { sum += ( ( int ) mapElement . getKey ( ) ) ; } } return sum ; }
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