static int maxEvenSum ( int arr [ ] , int n ) {
  int pos_sum = 0 ;
  for ( int i = 0 ;
  i < n ;
  ++ i ) if ( arr [ i ] > 0 ) pos_sum += arr [ i ] ;
  if ( pos_sum % 2 == 0 ) return pos_sum ;
  int ans = Integer . MIN_VALUE ;
  for ( int i = 0 ;
  i < n ;
  ++ i ) {
    if ( arr [ i ] % 2 != 0 ) {
      if ( arr [ i ] > 0 ) ans = ans > ( pos_sum - arr [ i ] ) ? ans : ( pos_sum - arr [ i ] ) ;
      else ans = ans > ( pos_sum + arr [ i ] ) ? ans : ( pos_sum + arr [ i ] ) ;
    }
  }
  return ans ;
}

static int maxEvenSum ( int arr [ ] , int n ) { int pos_sum = 0 ; for ( int i = 0 ; i < n ; ++ i ) if ( arr [ i ] > 0 ) pos_sum += arr [ i ] ; if ( pos_sum % 2 == 0 ) return pos_sum ; int ans = Integer . MIN_VALUE ; for ( int i = 0 ; i < n ; ++ i ) { if ( arr [ i ] % 2 != 0 ) { if ( arr [ i ] > 0 ) ans = ans > ( pos_sum - arr [ i ] ) ? ans : ( pos_sum - arr [ i ] ) ; else ans = ans > ( pos_sum + arr [ i ] ) ? ans : ( pos_sum + arr [ i ] ) ; } } return ans ; }
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