public static void main ( String args [ ] ) throws Exception {
  Scanner sc = new Scanner ( System . in ) ;
  int N = sc . nextInt ( ) ;
  long x = sc . nextLong ( ) ;
  long [ ] a = new long [ N + 1 ] ;
  for ( int i = 1 ;
  i <= N ;
  i ++ ) {
    a [ i ] = sc . nextInt ( ) ;
  }
  long [ ] [ ] partmin = new long [ N + 1 ] [ N + 1 ] ;
  for ( int i = 1 ;
  i <= N ;
  i ++ ) {
    for ( int j = i ;
    j <= N + i - 1 ;
    j ++ ) {
      if ( i == j ) {
        partmin [ i ] [ j ] = a [ i ] ;
      }
      else {
        int k = ( j - 1 ) % N + 1 ;
        if ( k != 1 ) {
          partmin [ i ] [ k ] = Math . min ( partmin [ i ] [ k - 1 ] , a [ k ] ) ;
        }
        else {
          partmin [ i ] [ k ] = Math . min ( partmin [ i ] [ N ] , a [ 1 ] ) ;
        }
      }
    }
  }
  long min = 1000000000 ;
  min = min * min ;
  for ( long i = 0 ;
  i < N ;
  i ++ ) {
    long cost = i * x ;
    for ( int j = 1 ;
    j <= N ;
    j ++ ) {
      cost += partmin [ ( int ) ( N + j - i - 1 ) % N + 1 ] [ j ] ;
    }
    min = Math . min ( min , cost ) ;
  }
  System . out . println ( min ) ;
}

public static void main ( String args [ ] ) throws Exception { Scanner sc = new Scanner ( System . in ) ; int N = sc . nextInt ( ) ; long x = sc . nextLong ( ) ; long [ ] a = new long [ N + 1 ] ; for ( int i = 1 ; i <= N ; i ++ ) { a [ i ] = sc . nextInt ( ) ; } long [ ] [ ] partmin = new long [ N + 1 ] [ N + 1 ] ; for ( int i = 1 ; i <= N ; i ++ ) { for ( int j = i ; j <= N + i - 1 ; j ++ ) { if ( i == j ) { partmin [ i ] [ j ] = a [ i ] ; } else { int k = ( j - 1 ) % N + 1 ; if ( k != 1 ) { partmin [ i ] [ k ] = Math . min ( partmin [ i ] [ k - 1 ] , a [ k ] ) ; } else { partmin [ i ] [ k ] = Math . min ( partmin [ i ] [ N ] , a [ 1 ] ) ; } } } } long min = 1000000000 ; min = min * min ; for ( long i = 0 ; i < N ; i ++ ) { long cost = i * x ; for ( int j = 1 ; j <= N ; j ++ ) { cost += partmin [ ( int ) ( N + j - i - 1 ) % N + 1 ] [ j ] ; } min = Math . min ( min , cost ) ; } System . out . println ( min ) ; }
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