public static void main ( String [ ] args ) throws IOException {
  Scanner scan = new Scanner ( System . in ) ;
  int n = scan . nextInt ( ) ;
  int s = scan . nextInt ( ) ;
  int count = 0 ;
  int sum = 0 ;
  for ( int i = n ;
  i >= 0 ;
  ) {
    sum += i ;
    if ( sum <= s ) {
      count ++ ;
      if ( sum == s ) {
        System . out . println ( count ) ;
        break ;
      }
    }
    else {
      sum -= i ;
      i -- ;
    }
  }
}

public static void main ( String [ ] args ) throws IOException { Scanner scan = new Scanner ( System . in ) ; int n = scan . nextInt ( ) ; int s = scan . nextInt ( ) ; int count = 0 ; int sum = 0 ; for ( int i = n ; i >= 0 ; ) { sum += i ; if ( sum <= s ) { count ++ ; if ( sum == s ) { System . out . println ( count ) ; break ; } } else { sum -= i ; i -- ; } } }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (array_type element: (type_identifier) dimensions: (dimensions)) name: (identifier))) (throws (type_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: (decimal_integer_literal))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (identifier))) condition: (binary_expression left: (identifier) right: (decimal_integer_literal)) body: (block (expression_statement (assignment_expression left: (identifier) right: (identifier))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (identifier))) consequence: (block (expression_statement (update_expression (identifier))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (identifier))) consequence: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (identifier)))) (break_statement)))) alternative: (block (expression_statement (assignment_expression left: (identifier) right: (identifier))) (expression_statement (update_expression (identifier)))))))))