static int distinctSubString ( String P , String Q , int K , int N ) {
  HashSet < String > S = new HashSet < String > ( ) ;
  for ( int i = 0 ;
  i < N ;
  ++ i ) {
    int sum = 0 ;
    String s = "" ;
    for ( int j = i ;
    j < N ;
    ++ j ) {
      int pos = P . charAt ( j ) - 'a' ;
      sum += Q . charAt ( pos ) - '0' ;
      s += P . charAt ( j ) ;
      if ( sum <= K ) {
        S . add ( s ) ;
      }
      else {
        break ;
      }
    }
  }
  return S . size ( ) ;
}

static int distinctSubString ( String P , String Q , int K , int N ) { HashSet < String > S = new HashSet < String > ( ) ; for ( int i = 0 ; i < N ; ++ i ) { int sum = 0 ; String s = " " ; for ( int j = i ; j < N ; ++ j ) { int pos = P . charAt ( j ) - ' a ' ; sum += Q . charAt ( pos ) - '0' ; s += P . charAt ( j ) ; if ( sum <= K ) { S . add ( s ) ; } else { break ; } } } return S . size ( ) ; }
(method_declaration (modifiers) type: (integral_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (type_identifier) name: (identifier)) (formal_parameter type: (type_identifier) name: (identifier)) (formal_parameter type: (integral_type) name: (identifier)) (formal_parameter type: (integral_type) name: (identifier))) body: (block (local_variable_declaration type: (generic_type (type_identifier) (type_arguments (type_identifier))) declarator: (variable_declarator name: (identifier) value: (object_creation_expression type: (generic_type (type_identifier) (type_arguments (type_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: (identifier)) 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: (type_identifier) declarator: (variable_declarator name: (identifier) value: (string_literal))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (identifier))) condition: (binary_expression left: (identifier) right: (identifier)) update: (update_expression (identifier)) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))) right: (character_literal)))) (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))) right: (character_literal)))) (expression_statement (assignment_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (identifier))) consequence: (block (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))))) alternative: (block (break_statement))))))) (return_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))))