import java.time.LocalDate;
import java.time.LocalTime;
import java.time.OffsetDateTime;
import java.time.ZoneOffset;
import java.time.temporal.ChronoUnit;
 
class Main {
    public static void main(String[] args) {
        OffsetDateTime currentTime = OffsetDateTime.now(ZoneOffset.UTC);
        OffsetDateTime zeroPointTime = OffsetDateTime.of(LocalDate.of(2000, 1, 1), LocalTime.of(0, 0), ZoneOffset.UTC);
        System.out.println(ChronoUnit.SECONDS.between(zeroPointTime, currentTime));
    }
}

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