This is your girlfriend.
Serial killer Bablu has
kidnapped her. If you want
to save her you have to
go to BulBul fountain.

Text from Bablu:
So, you have come? I have
your girlfriend and I have
rigged her with explosives.
If you want to see her again
you have to solve a puzzle
within 53 seconds. If you
fail your lovely girlfriend
will die.

You have a 3 litre jug and a
5 litre jug. The bomb can be
defused by placing a jug with
EXACTLY 4 litres of water in it,
on a scale connected to the bomb.
Initially, both of them are empty.


Situation: