public static void main ( String [ ] args ) {
  Scanner input = new Scanner ( System . in ) ;
  int n = input . nextInt ( ) ;
  long a = input . nextLong ( ) ;
  long b = input . nextLong ( ) ;
  long fatiga = 0 ;
  input . nextLine ( ) ;
  long pueblos [ ] = new long [ n ] ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) {
    pueblos [ i ] = input . nextLong ( ) ;
  }
  input . nextLine ( ) ;
  for ( int i = 0 ;
  i < n - 1 ;
  i ++ ) {
    if ( ( pueblos [ i + 1 ] - pueblos [ i ] ) * a < b ) fatiga += ( pueblos [ i + 1 ] - pueblos [ i ] ) * a ;
    else fatiga += b ;
  }
  System . out . println ( fatiga ) ;
}

public static void main ( String [ ] args ) { Scanner input = new Scanner ( System . in ) ; int n = input . nextInt ( ) ; long a = input . nextLong ( ) ; long b = input . nextLong ( ) ; long fatiga = 0 ; input . nextLine ( ) ; long pueblos [ ] = new long [ n ] ; for ( int i = 0 ; i < n ; i ++ ) { pueblos [ i ] = input . nextLong ( ) ; } input . nextLine ( ) ; for ( int i = 0 ; i < n - 1 ; i ++ ) { if ( ( pueblos [ i + 1 ] - pueblos [ i ] ) * a < b ) fatiga += ( pueblos [ i + 1 ] - pueblos [ i ] ) * a ; else fatiga += b ; } System . out . println ( fatiga ) ; }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (array_type element: (type_identifier) dimensions: (dimensions)) name: (identifier))) body: (block (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (object_creation_expression type: (type_identifier) arguments: (argument_list (field_access object: (identifier) field: (identifier)))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) dimensions: (dimensions) value: (array_creation_expression type: (integral_type) dimensions: (dimensions_expr (identifier))))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (identifier)) update: (update_expression (identifier)) body: (block (expression_statement (assignment_expression left: (array_access array: (identifier) index: (identifier)) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))))) (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (binary_expression left: (identifier) right: (decimal_integer_literal))) update: (update_expression (identifier)) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (parenthesized_expression (binary_expression left: (array_access array: (identifier) index: (binary_expression left: (identifier) right: (decimal_integer_literal))) right: (array_access array: (identifier) index: (identifier)))) right: (identifier)) right: (identifier))) consequence: (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (parenthesized_expression (binary_expression left: (array_access array: (identifier) index: (binary_expression left: (identifier) right: (decimal_integer_literal))) right: (array_access array: (identifier) index: (identifier)))) right: (identifier)))) alternative: (expression_statement (assignment_expression left: (identifier) right: (identifier)))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (identifier))))))