public static void main ( String [ ] args ) {
  Scanner sc = new Scanner ( System . in ) ;
  int a = Integer . parseInt ( sc . next ( ) ) ;
  int b = Integer . parseInt ( sc . next ( ) ) ;
  int c = Integer . parseInt ( sc . next ( ) ) ;
  a = a - b ;
  for ( ;
  ;
  ) {
    a -= c ;
    if ( a < c ) {
      break ;
    }
  }
  System . out . println ( a ) ;
}

public static void main ( String [ ] args ) { Scanner sc = new Scanner ( System . in ) ; int a = Integer . parseInt ( sc . next ( ) ) ; int b = Integer . parseInt ( sc . next ( ) ) ; int c = Integer . parseInt ( sc . next ( ) ) ; a = a - b ; for ( ; ; ) { a -= c ; if ( a < c ) { break ; } } System . out . println ( a ) ; }
(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 (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 (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 (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))))) (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (identifier)))) (for_statement body: (block (expression_statement (assignment_expression left: (identifier) right: (identifier))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (identifier))) consequence: (block (break_statement))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (identifier))))))