public static void main ( String [ ] args ) {
  Scanner in = new Scanner ( System . in ) ;
  long t = in . nextLong ( ) , s = in . nextLong ( ) , x = in . nextLong ( ) ;
  in . close ( ) ;
  x -= t ;
  System . out . println ( ( ( x % s == 0 || x % s == 1 ) && x > 1 ) || x == 0 ? "YES" : "NO" ) ;
}

public static void main ( String [ ] args ) { Scanner in = new Scanner ( System . in ) ; long t = in . nextLong ( ) , s = in . nextLong ( ) , x = in . nextLong ( ) ; in . close ( ) ; x -= t ; System . out . println ( ( ( x % s == 0 || x % s == 1 ) && x > 1 ) || x == 0 ? " YES " : " NO " ) ; }
(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))) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))) (expression_statement (assignment_expression left: (identifier) right: (identifier))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (ternary_expression condition: (binary_expression left: (parenthesized_expression (binary_expression left: (parenthesized_expression (binary_expression left: (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (decimal_integer_literal)) right: (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (decimal_integer_literal)))) right: (binary_expression left: (identifier) right: (decimal_integer_literal)))) right: (binary_expression left: (identifier) right: (decimal_integer_literal))) consequence: (string_literal) alternative: (string_literal)))))))