public static void main ( String [ ] args ) {
  Scanner scanner = new Scanner ( System . in ) ;
  int n = scanner . nextInt ( ) ;
  int x = scanner . nextInt ( ) ;
  int INF = Integer . MAX_VALUE ;
  int [ ] a = new int [ n ] ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) {
    a [ i ] = scanner . nextInt ( ) ;
  }
  int [ ] b = new int [ n ] ;
  Arrays . fill ( b , INF ) ;
  long ans = Long . MAX_VALUE ;
  for ( int magic = 0 ;
  magic < n ;
  magic ++ ) {
    long s = ( long ) magic * x ;
    for ( int i = 0 ;
    i < n ;
    i ++ ) {
      b [ i ] = Math . min ( b [ i ] , a [ ( i + n - magic ) % n ] ) ;
      s += b [ i ] ;
    }
    ans = Math . min ( ans , s ) ;
  }
  System . out . println ( ans ) ;
}

public static void main ( String [ ] args ) { Scanner scanner = new Scanner ( System . in ) ; int n = scanner . nextInt ( ) ; int x = scanner . nextInt ( ) ; int INF = Integer . MAX_VALUE ; int [ ] a = new int [ n ] ; for ( int i = 0 ; i < n ; i ++ ) { a [ i ] = scanner . nextInt ( ) ; } int [ ] b = new int [ n ] ; Arrays . fill ( b , INF ) ; long ans = Long . MAX_VALUE ; for ( int magic = 0 ; magic < n ; magic ++ ) { long s = ( long ) magic * x ; for ( int i = 0 ; i < n ; i ++ ) { b [ i ] = Math . min ( b [ i ] , a [ ( i + n - magic ) % n ] ) ; s += b [ i ] ; } ans = Math . min ( ans , s ) ; } System . out . println ( ans ) ; }
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