Problem is here:

If you don't sleep enough time, your brain won't work very good.

But if you will sleep, you will have less time for studying.

Can anyone say something about that?

In this round fest and Shadow are cheaters.

Here are their solutions for B:

14455597

14455707

I think it doesn't matter from which problem you start.

P.S. There are a lot of blogs like yours, read them and try to find your problem.

Say it to red coders who became orange after color revolution.

I'm so sorry, it seems like no one enjoys this problems...

gl & hf!

Thanks for help!

Here is statement :

Given n, and array A(all numbers less than 10^9).

Then given m, and m requests :

1) + l r d, add to all numbers from l to r d (1 <= l <= r <= n, 0 <= d <= 10^9).

2) * l r d, multiply to all numbers from l to r d (1 <= l <= r <= n, 0 <= d <= 10^9).

3) ? p, print p-th number modulo 10^9 + 7.

P.S This problem from Republic olympiad in Kazakhstan.

I see your speed of coding in your last contest, very good job!