YoussefObama's blog

By YoussefObama, history, 3 months ago,

We are proud to announce that YoussefObama posted educational content and blogs in all major scientific fields ( chimistry, biologie, fiziks and mathimatics) and not only this, he has linked them with compititve programeng so thank you codfrcs community for your continos support! 3> 3> 3> >3

Again thank you codfrcs community!!!!!!!!!!!!!!!

• -22

By YoussefObama, history, 3 months ago,

A chemist and computer solver and family holder at the same time!!!!

• -27

By YoussefObama, history, 3 months ago,

For some reasons 90% of smart piple prefer upside down sigmant-tree but for example the smartest codfrcs user sword060 prefers sideway sigmant tree. For me YoussefObama, i loves regilar sigmant-tree.

What about you? Which type of sigmant-tree are you loves?

Regilar Sigmant-Tree

=============

Sideway Sigmant-Tree

=============

Upside Down Sigmant-Tree

• -33

By YoussefObama, history, 3 months ago,

Could you solve this math proplem????

90% of smart piple kan't solve these.

find two integres such that:

• Their difference is $0$.

• Their product is $1$.

Solution
• -26

By YoussefObama, history, 4 months ago,

STTOOOOOOOOOOOOOOOOOPPPPPPPPP!!!!!!!!!!!!!

• -39

By YoussefObama, history, 4 months ago,

Codfrcs should make rounds 15:35 GMT instead of 14:35 !!!!!

Egyptians have schools

Schools end at 3 PM (13:00 GMT)

Schools are away from home

Students go home

Students take time

Students get home 4 PM (14:00 GMT)

Students dont have eat time.

Students join codfrcs without eat

Students dont do good

Students dont LGM

• -44

By YoussefObama, 4 months ago,

helLo codfrCs,

6. Sigmant-tree historia

• -21

By YoussefObama, history, 5 months ago,

#############

• -27

By YoussefObama, 5 months ago,

dat 0^0 = 1

0^0 is alwez 0!

0

• -46

By YoussefObama, 6 months ago,

I am writing this post to thank Al_Khwarazmi the one who inspired me to start CP!

I draw his picture to honor him <3

• -18

By YoussefObama, 6 months ago,

How did people solve this problem based on the fact that

max(a_1, a_2, ..., a_n) — min(a_1, a_2, ..., a_n) = x where a_1 + a_2 + ... + a_n = x^2

how is this correct?

• -4

By YoussefObama, history, 8 months ago,

Global rounds and div1 + div2 rounds a r e b e t t e r, they h a v e i n t e r e s t i n g G and H

• -27

By YoussefObama, history, 10 months ago,

Hi Codforcs,

I wonder when Educational Codeforces Round (Rated for Div. 1) are going to be introduced.

There's a lot of such rounds:

https://codeforces.com/contest/1156

https://codeforces.com/contest/1716

I guess such rounds should be rated for div. 1 as well

Thanks!

• -28

By YoussefObama, 12 months ago,

It has been long time since I posted my last educative blog so I think it's time for a new one.

To unlock the spoiler, kindly dm me.

• -30

By YoussefObama, history, 12 months ago,

I think the higher your rating is, the more black characters you should have in your username. For example:

Master: 1 black characters

International Master: 2 black characters

Grandmaster & International Grandmaster: 3 black characters

Legendary Grandmaster: Your color is black

• -32

By YoussefObama, history, 12 months ago,

Which IDE do you prefer and think is better for cp?

Visual Studio Code

Codeblocks

Clion

CP Editor

VIM

Sublime

Codeforces Custom Invocation

• -9

By YoussefObama, history, 13 months ago,

How to group oranges together

• +4

By YoussefObama, history, 13 months ago,

How to solve Traveling Salesman Problem in O(logV):

Ingredients: 1 stick (4 ounces) unsalted butter

6 ounces bittersweet chocolate, preferably Valrhona

2 eggs

2 egg yolks

1/4 cup sugar

Pinch of salt

2 tablespoons all-purpose flour

Steps:

1- Preheat the oven to 450°. Butter and lightly flour four 6-ounce ramekins. Tap out the excess flour. Set the ramekins on a baking sheet.

2- In a double boiler, over simmering water, melt the butter with the chocolate. In a medium bowl, beat the eggs with the egg yolks, sugar and salt at high speed until thickened and pale.

3- Whisk the chocolate until smooth. Quickly fold it into the egg mixture along with the flour. Spoon the batter into the prepared ramekins and bake for 12 minutes, or until the sides of the cakes are firm but the centers are soft. Let the cakes cool in the ramekins for 1 minute, then cover each with an inverted dessert plate. Carefully turn each one over, let stand for 10 seconds and then unmold. Serve immediately.

Thank me later!

• -35

By YoussefObama, history, 13 months ago,

The IOI 2022 selection for Egypt has recently ended. Here are the four participants:

Yousef_Salama (Kindergarten, 12 attempts left)

mohammedehab2002 (1st Grade, 11 attempts left)