Is necessary to have full score to qualify ?

YES

you have the hole 4days to solve it their isn't smt like the countdown will start.

Whole time to solve the problem

If I join the contest how much hours I have to solve the problem(s) , Thanks .

Before the contest ends (regardless of when you start)

## Comments

Is necessary to have full score to qualify ?

YES

you have the hole 4days to solve it their isn't smt like the countdown will start.

Whole time to solve the problem

If I join the contest how much hours I have to solve the problem(s) , Thanks .

Before the contest ends (regardless of when you start)