static void maxSum ( int [ ] a , int n ) {
  Vector < Integer > l = new Vector < Integer > ( ) ;
  int s = 0 ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) {
    s += Math . abs ( a [ i ] ) ;
    if ( a [ i ] >= 0 ) continue ;
    if ( i == 0 ) l . add ( i + 1 ) ;
    else {
      l . add ( i + 1 ) ;
      l . add ( i ) ;
    }
  }
  System . out . println ( s ) ;
  for ( int i = 0 ;
  i < l . size ( ) ;
  i ++ ) System . out . print ( l . get ( i ) + " " ) ;
}

static void maxSum ( int [ ] a , int n ) { Vector < Integer > l = new Vector < Integer > ( ) ; int s = 0 ; for ( int i = 0 ; i < n ; i ++ ) { s += Math . abs ( a [ i ] ) ; if ( a [ i ] >= 0 ) continue ; if ( i == 0 ) l . add ( i + 1 ) ; else { l . add ( i + 1 ) ; l . add ( i ) ; } } System . out . println ( s ) ; for ( int i = 0 ; i < l . size ( ) ; i ++ ) System . out . print ( l . get ( i ) + " ▁ " ) ; }
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