public static void main ( String [ ] args ) {
  int n = in . nextInt ( ) ;
  long [ ] ps = new long [ n + 1 ] ;
  long nf = 1 ;
  for ( int i = 1 ;
  i <= n ;
  ++ i ) {
    ps [ i ] = ( ps [ i - 1 ] + in . nextInt ( ) ) % M ;
    nf = nf * i % M ;
  }
  long ans = nf * ps [ n ] % M , s = 0 ;
  for ( int i = 1 ;
  i <= n - 1 ;
  ++ i ) {
    s = ( s + ps [ n - i ] - ps [ i ] + M ) % M ;
    ans = ( ans + nf * modI ( ( long ) ( i + 1 ) * ( i >= n - 1 ? 1 : i + 2 ) , M ) % M * 2 * s + nf * modI ( i + 1 , M ) % M * ( ps [ i ] + ps [ n ] - ps [ n - i ] + M ) ) % M ;
  }
  System . out . println ( ans ) ;
}

public static void main ( String [ ] args ) { int n = in . nextInt ( ) ; long [ ] ps = new long [ n + 1 ] ; long nf = 1 ; for ( int i = 1 ; i <= n ; ++ i ) { ps [ i ] = ( ps [ i - 1 ] + in . nextInt ( ) ) % M ; nf = nf * i % M ; } long ans = nf * ps [ n ] % M , s = 0 ; for ( int i = 1 ; i <= n - 1 ; ++ i ) { s = ( s + ps [ n - i ] - ps [ i ] + M ) % M ; ans = ( ans + nf * modI ( ( long ) ( i + 1 ) * ( i >= n - 1 ? 1 : i + 2 ) , M ) % M * 2 * s + nf * modI ( i + 1 , M ) % M * ( ps [ i ] + ps [ n ] - ps [ n - i ] + M ) ) % M ; } System . out . println ( ans ) ; }
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