public static void main ( String [ ] args ) {
  Scanner sc = new Scanner ( System . in ) ;
  int H = sc . nextInt ( ) ;
  int W = sc . nextInt ( ) ;
  int K = sc . nextInt ( ) ;
  long MOD = 1000000007 ;
  int [ ] [ ] dp = new int [ H + 1 ] [ W ] ;
  dp [ 0 ] [ 0 ] = 1 ;
  for ( int h = 1 ;
  h <= H ;
  h ++ ) {
    for ( int w = 0 ;
    w < W ;
    w ++ ) {
      for ( int i = 0 ;
      i < ( 1 << W - 1 ) ;
      i ++ ) {
        int mask = 3 ;
        boolean flag = true ;
        while ( true ) {
          if ( ( mask & i ) == mask ) {
            flag = false ;
          }
          if ( mask == 3 << W - 1 ) {
            break ;
          }
          mask = mask << 1 ;
        }
        if ( flag ) {
          if ( w > 0 && ( i & ( 1 << w - 1 ) ) > 0 ) {
            dp [ h ] [ w ] += dp [ h - 1 ] [ w - 1 ] ;
          }
          else if ( w < W - 1 && ( i & ( 1 << w ) ) > 0 ) {
            dp [ h ] [ w ] += dp [ h - 1 ] [ w + 1 ] ;
          }
          else {
            dp [ h ] [ w ] += dp [ h - 1 ] [ w ] ;
          }
          dp [ h ] [ w ] %= MOD ;
        }
      }
    }
  }
  System . out . println ( dp [ H ] [ K - 1 ] ) ;
}

public static void main ( String [ ] args ) { Scanner sc = new Scanner ( System . in ) ; int H = sc . nextInt ( ) ; int W = sc . nextInt ( ) ; int K = sc . nextInt ( ) ; long MOD = 1000000007 ; int [ ] [ ] dp = new int [ H + 1 ] [ W ] ; dp [ 0 ] [ 0 ] = 1 ; for ( int h = 1 ; h <= H ; h ++ ) { for ( int w = 0 ; w < W ; w ++ ) { for ( int i = 0 ; i < ( 1 << W - 1 ) ; i ++ ) { int mask = 3 ; boolean flag = true ; while ( true ) { if ( ( mask & i ) == mask ) { flag = false ; } if ( mask == 3 << W - 1 ) { break ; } mask = mask << 1 ; } if ( flag ) { if ( w > 0 && ( i & ( 1 << w - 1 ) ) > 0 ) { dp [ h ] [ w ] += dp [ h - 1 ] [ w - 1 ] ; } else if ( w < W - 1 && ( i & ( 1 << w ) ) > 0 ) { dp [ h ] [ w ] += dp [ h - 1 ] [ w + 1 ] ; } else { dp [ h ] [ w ] += dp [ h - 1 ] [ w ] ; } dp [ h ] [ w ] %= MOD ; } } } } System . out . println ( dp [ H ] [ K - 1 ] ) ; }
(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))) (local_variable_declaration type: (array_type element: (integral_type) dimensions: (dimensions)) declarator: (variable_declarator name: (identifier) value: (array_creation_expression type: (integral_type) dimensions: (dimensions_expr (binary_expression left: (identifier) right: (decimal_integer_literal))) dimensions: (dimensions_expr (identifier))))) (expression_statement (assignment_expression left: (array_access array: (array_access array: (identifier) index: (decimal_integer_literal)) index: (decimal_integer_literal)) right: (decimal_integer_literal))) (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 (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 (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (parenthesized_expression (binary_expression left: (decimal_integer_literal) right: (binary_expression left: (identifier) right: (decimal_integer_literal))))) update: (update_expression (identifier)) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (local_variable_declaration type: (boolean_type) declarator: (variable_declarator name: (identifier) value: (true))) (while_statement condition: (parenthesized_expression (true)) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (parenthesized_expression (binary_expression left: (identifier) right: (identifier))) right: (identifier))) consequence: (block (expression_statement (assignment_expression left: (identifier) right: (false))))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (binary_expression left: (decimal_integer_literal) right: (binary_expression left: (identifier) right: (decimal_integer_literal))))) consequence: (block (break_statement))) (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (decimal_integer_literal)))))) (if_statement condition: (parenthesized_expression (identifier)) consequence: (block (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (decimal_integer_literal)) right: (binary_expression left: (parenthesized_expression (binary_expression left: (identifier) right: (parenthesized_expression (binary_expression left: (decimal_integer_literal) right: (binary_expression left: (identifier) right: (decimal_integer_literal)))))) right: (decimal_integer_literal)))) consequence: (block (expression_statement (assignment_expression left: (array_access array: (array_access array: (identifier) index: (identifier)) index: (identifier)) right: (array_access array: (array_access array: (identifier) index: (binary_expression left: (identifier) right: (decimal_integer_literal))) index: (binary_expression left: (identifier) right: (decimal_integer_literal)))))) alternative: (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (binary_expression left: (identifier) right: (decimal_integer_literal))) right: (binary_expression left: (parenthesized_expression (binary_expression left: (identifier) right: (parenthesized_expression (binary_expression left: (decimal_integer_literal) right: (identifier))))) right: (decimal_integer_literal)))) consequence: (block (expression_statement (assignment_expression left: (array_access array: (array_access array: (identifier) index: (identifier)) index: (identifier)) right: (array_access array: (array_access array: (identifier) index: (binary_expression left: (identifier) right: (decimal_integer_literal))) index: (binary_expression left: (identifier) right: (decimal_integer_literal)))))) alternative: (block (expression_statement (assignment_expression left: (array_access array: (array_access array: (identifier) index: (identifier)) index: (identifier)) right: (array_access array: (array_access array: (identifier) index: (binary_expression left: (identifier) right: (decimal_integer_literal))) index: (identifier))))))) (expression_statement (assignment_expression left: (array_access array: (array_access array: (identifier) index: (identifier)) index: (identifier)) right: (identifier))))))))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (array_access array: (array_access array: (identifier) index: (identifier)) index: (binary_expression left: (identifier) right: (decimal_integer_literal))))))))