import java.time.OffsetDateTime;
import java.time.ZoneOffset;

public class Main {
	public static void main(String[] args) {
		long epochMillis = OffsetDateTime.of(1900, 1, 1, 0, 0, 0, 0, ZoneOffset.UTC)
							.toInstant()
							.toEpochMilli();

		System.out.println(epochMillis);
	}
}