// "Convert to 'LongAdder'" "true"
import java.util.concurrent.atomic.AtomicLong;

public class Main10 {
  void m() {
    AtomicLong <caret>l = new AtomicLong(0);

    l.decrementAndGet();

    System.out.println(l.floatValue());

    l.set(12);
  }
}