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Maxim has opened his own restaurant! The restaurant has got a huge table, the table's length is p meters.
Maxim has got a dinner party tonight, n guests will come to him. Let's index the guests of Maxim's restaurant from 1 to n. Maxim knows the sizes o... |
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All space-time unified dimension sugoroku tournament. You are representing the Earth in the 21st century in the tournament, which decides only one Sugoroku absolute champion out of more than 500 trillion participants.
The challenge you are currently ch... |
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We all know that a superhero can transform to certain other superheroes. But not all Superheroes can transform to any other superhero. A superhero with name $s$ can transform to another superhero with name $t$ if $s$ can be made equal to $t$ by changing... |
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# Task
**_Given_** a **_Divisor and a Bound_** , *Find the largest integer N* , Such That ,
# Conditions :
* **_N_** is *divisible by divisor*
* **_N_** is *less than or equal to bound*
* **_N_** is *greater than 0*.
___
# Notes
* The **_pa... |
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Polycarp is flying in the airplane. Finally, it is his favorite time — the lunchtime. The BerAvia company stewardess is giving food consecutively to all the passengers from the 1-th one to the last one. Polycarp is sitting on seat m, that means, he will... |
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Today's morning was exceptionally snowy. Meshanya decided to go outside and noticed a huge snowball rolling down the mountain! Luckily, there are two stones on that mountain.
Initially, snowball is at height $h$ and it has weight $w$. Each second the f... |
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You are given a set of n points on the plane. A line containing the origin is called good, if projection of the given set to this line forms a symmetric multiset of points. Find the total number of good lines.
Multiset is a set where equal elements are... |
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You are a teacher at a cram school for elementary school pupils.
One day, you showed your students how to calculate division of fraction in a class of mathematics. Your lesson was kind and fluent, and it seemed everything was going so well - except for... |
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You are given positive integers A and B.
Find the K-th largest positive integer that divides both A and B.
The input guarantees that there exists such a number.
-----Constraints-----
- All values in input are integers.
- 1 \leq A, B \leq 100
- The K... |
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Dreamoon has a string s and a pattern string p. He first removes exactly x characters from s obtaining string s' as a result. Then he calculates $\operatorname{occ}(s^{\prime}, p)$ that is defined as the maximal number of non-overlapping substrings equa... |
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In this Kata, you will be given a string and your task is to determine if that string can be a palindrome if we rotate one or more characters to the left.
```Haskell
solve("4455") = true, because after 1 rotation, we get "5445" which is a palindrome
so... |
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Little Nastya has a hobby, she likes to remove some letters from word, to obtain another word. But it turns out to be pretty hard for her, because she is too young. Therefore, her brother Sergey always helps her.
Sergey gives Nastya the word t and want... |
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## Task:
You have to write a function `pattern` which returns the following Pattern(See Examples) upto n number of rows.
* Note:```Returning``` the pattern is not the same as ```Printing``` the pattern.
### Rules/Note:
* The pattern should be creat... |
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Emuskald is an avid horticulturist and owns the world's longest greenhouse — it is effectively infinite in length.
Over the years Emuskald has cultivated n plants in his greenhouse, of m different plant species numbered from 1 to m. His greenhouse is v... |
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The Rebel fleet is afraid that the Empire might want to strike back again. Princess Heidi needs to know if it is possible to assign R Rebel spaceships to guard B bases so that every base has exactly one guardian and each spaceship has exactly one assign... |
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Input Format
N K
a_1 a_2 a_3 ... a_N
Output Format
Print the minimum cost in one line. In the end put a line break.
Constraints
* 1 ≤ K ≤ N ≤ 15
* 1 ≤ a_i ≤ 10^9
Scoring
Subtask 1 [120 points]
* N = K
Subtask 2 [90 points]
* N ≤ 5
* a_i... |
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Make a function that returns the value multiplied by 50 and increased by 6. If the value entered is a string it should return "Error".
Note: in `C#`, you'll always get the input as a string, so the above applies if the string isn't representing a doubl... |
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Implement `String#parse_mana_cost`, which parses [Magic: the Gathering mana costs](http://mtgsalvation.gamepedia.com/Mana_cost) expressed as a string and returns a `Hash` with keys being kinds of mana, and values being the numbers.
Don't include any ma... |
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Consider a table G of size n × m such that G(i, j) = GCD(i, j) for all 1 ≤ i ≤ n, 1 ≤ j ≤ m. GCD(a, b) is the greatest common divisor of numbers a and b.
You have a sequence of positive integer numbers a_1, a_2, ..., a_{k}. We say that this sequence oc... |
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Fox Ciel saw a large field while she was on a bus. The field was a n × m rectangle divided into 1 × 1 cells. Some cells were wasteland, and other each cell contained crop plants: either carrots or kiwis or grapes.
After seeing the field carefully, Cie... |
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An open-top box having a square bottom is placed on the floor. You see a number of needles vertically planted on its bottom.
You want to place a largest possible spheric balloon touching the box bottom, interfering with none of the side walls nor the n... |
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There are $n$ people in this world, conveniently numbered $1$ through $n$. They are using burles to buy goods and services. Occasionally, a person might not have enough currency to buy what he wants or needs, so he borrows money from someone else, with ... |
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Tic-tac-toe is a game in which you win when you put ○ and × alternately in the 3 × 3 squares and line up ○ or × in one of the vertical, horizontal, and diagonal lines (Fig.). 1 to Fig. 3)
<image> | <image> | <image>
--- | --- | ---
Figure 1: ○ wins | F... |
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A new agent called Killjoy invented a virus COVID-2069 that infects accounts on Codeforces. Each account has a rating, described by an integer (it can possibly be negative or very large).
Killjoy's account is already infected and has a rating equal to ... |
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You are given a graph with 3 ⋅ n vertices and m edges. You are to find a matching of n edges, or an independent set of n vertices.
A set of edges is called a matching if no two edges share an endpoint.
A set of vertices is called an independent set if... |
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Bizon the Champion isn't just charming, he also is very smart.
While some of us were learning the multiplication table, Bizon the Champion had fun in his own manner. Bizon the Champion painted an n × m multiplication table, where the element on the int... |
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You are given a string $s$, consisting of lowercase Latin letters. While there is at least one character in the string $s$ that is repeated at least twice, you perform the following operation:
you choose the index $i$ ($1 \le i \le |s|$) such that the ... |
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From tomorrow, the long-awaited summer vacation will begin. So I decided to invite my friends to go out to the sea.
However, many of my friends are shy. They would hate it if they knew that too many people would come with them.
Besides, many of my fri... |
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Bob is a duck. He wants to get to Alice's nest, so that those two can duck! [Image] Duck is the ultimate animal! (Image courtesy of See Bang)
The journey can be represented as a straight line, consisting of $n$ segments. Bob is located to the left of ... |
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Recently Polycarp started to develop a text editor that works only with correct bracket sequences (abbreviated as CBS).
Note that a bracket sequence is correct if it is possible to get a correct mathematical expression by adding "+"-s and "1"-s to it.... |
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A lot of people associate Logo programming language with turtle graphics. In this case the turtle moves along the straight line and accepts commands "T" ("turn around") and "F" ("move 1 unit forward").
You are given a list of commands that will be give... |
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Fox Ciel has some flowers: r red flowers, g green flowers and b blue flowers. She wants to use these flowers to make several bouquets. There are 4 types of bouquets:
To make a "red bouquet", it needs 3 red flowers. To make a "green bouquet", it need... |
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Let A, B, C, D, E be sets of integers and let U is a universal set that includes all sets under consideration. All elements in any set are different (no repetitions).
u - union of two sets, AuB = {x ∈ U : x ∈ A or x ∈ B} is the set of all elements whic... |
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Valeric and Valerko missed the last Euro football game, so they decided to watch the game's key moments on the Net. They want to start watching as soon as possible but the connection speed is too low. If they turn on the video right now, it will "hang u... |
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As a token of his gratitude, Takahashi has decided to give his mother an integer sequence. The sequence A needs to satisfy the conditions below:
* A consists of integers between X and Y (inclusive).
* For each 1\leq i \leq |A|-1, A_{i+1} is a multiple ... |
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A monster is chasing after Rick and Morty on another planet. They're so frightened that sometimes they scream. More accurately, Rick screams at times b, b + a, b + 2a, b + 3a, ... and Morty screams at times d, d + c, d + 2c, d + 3c, .... [Image]
The ... |
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It all started with a black-and-white picture, that can be represented as an $n \times m$ matrix such that all its elements are either $0$ or $1$. The rows are numbered from $1$ to $n$, the columns are numbered from $1$ to $m$.
Several operations were ... |
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Create a function that returns an array containing the first `l` digits from the `n`th diagonal of [Pascal's triangle](https://en.wikipedia.org/wiki/Pascal's_triangle).
`n = 0` should generate the first diagonal of the triangle (the 'ones'). The first ... |
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Polycarp is wondering about buying a new computer, which costs $c$ tugriks. To do this, he wants to get a job as a programmer in a big company.
There are $n$ positions in Polycarp's company, numbered starting from one. An employee in position $i$ earns... |
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There is a binary string $a$ of length $n$. In one operation, you can select any prefix of $a$ with an equal number of $0$ and $1$ symbols. Then all symbols in the prefix are inverted: each $0$ becomes $1$ and each $1$ becomes $0$.
For example, suppose... |
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Write a function that receives two strings and returns n, where n is equal to the number of characters we should shift the first string forward to match the second.
For instance, take the strings "fatigue" and "tiguefa". In this case, the first string ... |
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## Task
You need to implement two functions, `xor` and `or`, that replicate the behaviour of their respective operators:
- `xor` = Takes 2 values and returns `true` if, and only if, one of them is truthy.
- `or` = Takes 2 values and returns `true` if e... |
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In the capital city of Berland, Bertown, demonstrations are against the recent election of the King of Berland. Berland opposition, led by Mr. Ovalny, believes that the elections were not fair enough and wants to organize a demonstration at one of the s... |
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A browser-based puzzle game called "Bubble Puzzle" is now popular on the Internet.
The puzzle is played on a 4 × 4 grid, and initially there are several bubbles in the grid squares. Each bubble has a state expressed by a positive integer, and the state... |
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Write
```python
function combine()
```
that combines arrays by alternatingly taking elements passed to it.
E.g
```python
combine(['a', 'b', 'c'], [1, 2, 3]) == ['a', 1, 'b', 2, 'c', 3]
combine(['a', 'b', 'c'], [1, 2, 3, 4, 5]) == ['a', 1, 'b', 2, 'c... |
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In Fire City, there are n intersections and m one-way roads. The i-th road goes from intersection a_i to b_i and has length l_i miles.
There are q cars that may only drive along those roads. The i-th car starts at intersection v_i and has an odometer ... |
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Given a mixed array of number and string representations of integers, add up the string integers and subtract this from the total of the non-string integers.
Return as a number.
Write your solution by modifying this code:
```python
def div_con(x):
... |
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There is a circular pond with a perimeter of K meters, and N houses around them.
The i-th house is built at a distance of A_i meters from the northmost point of the pond, measured clockwise around the pond.
When traveling between these houses, you can o... |
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Your math teacher gave you the following problem:
There are $n$ segments on the $x$-axis, $[l_1; r_1], [l_2; r_2], \ldots, [l_n; r_n]$. The segment $[l; r]$ includes the bounds, i.e. it is a set of such $x$ that $l \le x \le r$. The length of the segme... |
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Let's denote a $k$-step ladder as the following structure: exactly $k + 2$ wooden planks, of which
two planks of length at least $k+1$ — the base of the ladder; $k$ planks of length at least $1$ — the steps of the ladder;
Note that neither the bas... |
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Read problems statements in Mandarin Chinese and Russian.
Chef wants to hire a new assistant. He published an advertisement regarding that in a newspaper. After seeing the advertisement, many candidates have applied for the job. Now chef wants to sho... |
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You have a fraction $\frac{a}{b}$. You need to find the first occurrence of digit c into decimal notation of the fraction after decimal point.
-----Input-----
The first contains three single positive integers a, b, c (1 ≤ a < b ≤ 10^5, 0 ≤ c ≤ 9).
... |
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Ohana Matsumae is trying to clean a room, which is divided up into an n by n grid of squares. Each square is initially either clean or dirty. Ohana can sweep her broom over columns of the grid. Her broom is very strange: if she sweeps over a clean squar... |
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Chef recently saw the movie Matrix. He loved the movie overall but he didn't agree with some things in it. Particularly he didn't agree with the bald boy when he declared - There is no spoon. Being a chef, he understands the importance of the spoon and ... |
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Thumbelina has had an accident. She has found herself on a little island in the middle of a swamp and wants to get to the shore very much.
One can get to the shore only by hills that are situated along a straight line that connects the little island wi... |
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The year of 2012 is coming...
According to an ancient choradrican legend in this very year, in 2012, Diablo and his brothers Mephisto and Baal will escape from hell, and innumerable hordes of demons will enslave the human world. But seven brave heroes ... |
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Andrewid the Android is a galaxy-famous detective. He is now investigating the case of vandalism at the exhibition of contemporary art.
The main exhibit is a construction of n matryoshka dolls that can be nested one into another. The matryoshka dolls a... |
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Sunake is in the form of a polygonal line consisting of n vertices (without self-intersection). First, Sunake-kun's i-th vertex is at (xi, yi). You can move continuously by translating or rotating, but you cannot deform (change the length of the polygon... |
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It's been a while since I played with A, B, and C. Mr. A and Mr. B became players, and Mr. C became a referee and played a badminton singles game. The rules decided by the three people are as follows.
* 3 Play the game.
* The person who gets 11 points ... |
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Mike and Ann are sitting in the classroom. The lesson is boring, so they decided to play an interesting game. Fortunately, all they need to play this game is a string $s$ and a number $k$ ($0 \le k < |s|$).
At the beginning of the game, players are giv... |
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Chef has a nice complete binary tree in his garden. Complete means that each node has exactly two sons, so the tree is infinite. Yesterday he had enumerated the nodes of the tree in such a way:
- Let's call the nodes' level a number of nodes that occur... |
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You are given an undirected graph with n vertices. There are no edge-simple cycles with the even length in it. In other words, there are no cycles of even length that pass each edge at most once. Let's enumerate vertices from 1 to n.
You have to answe... |
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At many competitions that have a word «cup» in its official name the winner is presented with an actual cup. This time the organizers of one unusual programming competition have decided to please the winner even more and to add a nameplate to the cup wi... |
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# Task
Pero has been into robotics recently, so he decided to make a robot that checks whether a deck of poker cards is complete.
He’s already done a fair share of work - he wrote a programme that recognizes the suits of the cards. For simplicity’s s... |
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Alexey, a merry Berland entrant, got sick of the gray reality and he zealously wants to go to university. There are a lot of universities nowadays, so Alexey is getting lost in the diversity — he has not yet decided what profession he wants to get. At s... |
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problem
AOR Ika is studying to pass the test.
AOR Ika-chan solved the $ N $ question. After that, round the solved problem according to the following procedure.
1. Check the correctness of the answer.
2. If the answer is correct, write a circle mark,... |
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A bracket sequence is called regular if it is possible to obtain correct arithmetic expression by inserting characters «+» and «1» into this sequence. For example, sequences «(())()», «()» and «(()(()))» are regular, while «)(», «(()» and «(()))(» are n... |
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Fox Ciel is playing a card game with her friend Jiro.
Jiro has n cards, each one has two attributes: position (Attack or Defense) and strength. Fox Ciel has m cards, each one has these two attributes too. It's known that position of all Ciel's cards is... |
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## Task:
You have to write a function **pattern** which returns the following Pattern(See Examples) upto (2n-1) rows, where n is parameter.
### Rules/Note:
* If the Argument is 0 or a Negative Integer then it should return "" i.e. empty string.
* All ... |
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There is a frog staying to the left of the string $s = s_1 s_2 \ldots s_n$ consisting of $n$ characters (to be more precise, the frog initially stays at the cell $0$). Each character of $s$ is either 'L' or 'R'. It means that if the frog is staying at t... |
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Today in the scientific lyceum of the Kingdom of Kremland, there was a biology lesson. The topic of the lesson was the genomes. Let's call the genome the string "ACTG".
Maxim was very boring to sit in class, so the teacher came up with a task for him: ... |
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Your task is very simple. Just write a function `isAlphabetic(s)`, which takes an input string `s` in lowercase and returns `true`/`false` depending on whether the string is in alphabetical order or not.
For example, `isAlphabetic('kata')` is False as ... |
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You wrote down all integers from $0$ to $10^n - 1$, padding them with leading zeroes so their lengths are exactly $n$. For example, if $n = 3$ then you wrote out 000, 001, ..., 998, 999.
A block in an integer $x$ is a consecutive segment of equal digit... |
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Yaroslav thinks that two strings s and w, consisting of digits and having length n are non-comparable if there are two numbers, i and j (1 ≤ i, j ≤ n), such that s_{i} > w_{i} and s_{j} < w_{j}. Here sign s_{i} represents the i-th digit of string s, sim... |
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You are an immigration officer in the Kingdom of AtCoder. The document carried by an immigrant has some number of integers written on it, and you need to check whether they meet certain criteria.
According to the regulation, the immigrant should be allo... |
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Nearly each project of the F company has a whole team of developers working on it. They often are in different rooms of the office in different cities and even countries. To keep in touch and track the results of the project, the F company conducts shar... |
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You are given $n$ integers $a_1, a_2, \ldots, a_n$. You choose any subset of the given numbers (possibly, none or all numbers) and negate these numbers (i. e. change $x \to (-x)$). What is the maximum number of different values in the array you can achi... |
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There is a 120 minute videotape with standard recording. When I set the VCR counter to 00:00:00 with the tape completely rewound and recorded in standard recording mode, I got a certain counter value. Enter this counter value (hours, minutes, seconds), ... |
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The zombies are gathering in their secret lair! Heidi will strike hard to destroy them once and for all. But there is a little problem... Before she can strike, she needs to know where the lair is. And the intel she has is not very good.
Heidi knows th... |
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The start of the new academic year brought about the problem of accommodation students into dormitories. One of such dormitories has a a × b square meter wonder room. The caretaker wants to accommodate exactly n students there. But the law says that the... |
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N programmers are going to participate in the preliminary stage of DDCC 20XX. Due to the size of the venue, however, at most 9 contestants can participate in the finals.
The preliminary stage consists of several rounds, which will take place as follows... |
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There are n points on the plane, the i-th of which is at (x_i, y_i). Tokitsukaze wants to draw a strange rectangular area and pick all the points in the area.
The strange area is enclosed by three lines, x = l, y = a and x = r, as its left side, its bo... |
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There are N towns in the State of Atcoder, connected by M bidirectional roads.
The i-th road connects Town A_i and B_i and has a length of C_i.
Joisino is visiting R towns in the state, r_1,r_2,..,r_R (not necessarily in this order).
She will fly to the... |
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There is a given sequence of integers a1, a2, ..., an, where every number is from 1 to 3 inclusively. You have to replace the minimum number of numbers in it so that all the numbers in the sequence are equal to each other.
Input
The first line contain... |
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A very easy task for you!
You have to create a method, that corrects a given date string.
There was a problem in addition, so many of the date strings are broken.
Date-Format is european. That means "DD.MM.YYYY".
Some examples:
"30.02.2016" -> "01.0... |
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Nowadays it is becoming increasingly difficult to park a car in cities successfully. Let's imagine a segment of a street as long as L meters along which a parking lot is located. Drivers should park their cars strictly parallel to the pavement on the ri... |
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Karl is developing a key storage service. Each user has a positive integer key.
Karl knows that storing keys in plain text is bad practice. So, instead of storing a key, he decided to store a fingerprint of a key. However, using some existing fingerpri... |
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Andrey needs one more problem to conduct a programming contest. He has n friends who are always willing to help. He can ask some of them to come up with a contest problem. Andrey knows one value for each of his fiends — the probability that this friend ... |
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Kolya is going to make fresh orange juice. He has n oranges of sizes a_1, a_2, ..., a_{n}. Kolya will put them in the juicer in the fixed order, starting with orange of size a_1, then orange of size a_2 and so on. To be put in the juicer the orange must... |
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Vasya studies divisibility rules at school. Here are some of them:
* Divisibility by 2. A number is divisible by 2 if and only if its last digit is divisible by 2 or in other words, is even.
* Divisibility by 3. A number is divisible by 3 if and on... |
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You are standing on the $\mathit{OX}$-axis at point $0$ and you want to move to an integer point $x > 0$.
You can make several jumps. Suppose you're currently at point $y$ ($y$ may be negative) and jump for the $k$-th time. You can:
either jump to the... |
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write me a function `stringy` that takes a `size` and returns a `string` of alternating `'1s'` and `'0s'`.
the string should start with a `1`.
a string with `size` 6 should return :`'101010'`.
with `size` 4 should return : `'1010'`.
with `size` 12 s... |
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Two famous competing companies ChemForces and TopChemist decided to show their sets of recently discovered chemical elements on an exhibition. However they know that no element should be present in the sets of both companies.
In order to avoid this rep... |
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In this problem, a $n \times m$ rectangular matrix $a$ is called increasing if, for each row of $i$, when go from left to right, the values strictly increase (that is, $a_{i,1}<a_{i,2}<\dots<a_{i,m}$) and for each column $j$, when go from top to bottom,... |
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Iahub is a big fan of tourists. He wants to become a tourist himself, so he planned a trip. There are n destinations on a straight road that Iahub wants to visit. Iahub starts the excursion from kilometer 0. The n destinations are described by a non-neg... |
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Pupils decided to go to amusement park. Some of them were with parents. In total, n people came to the park and they all want to get to the most extreme attraction and roll on it exactly once.
Tickets for group of x people are sold on the attraction, t... |
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Create a function
```python
has_two_cube_sums(n)
```
which checks if a given number `n` can be written as the sum of two cubes in two different ways: `n = a³+b³ = c³+d³`.
All the numbers `a`, `b`, `c` and `d` should be different and greater than `0`.
... |
Solve the programming task below in a Python markdown code block.
You have an array of numbers.
Your task is to sort ascending odd numbers but even numbers must be on their places.
Zero isn't an odd number and you don't need to move it. If you have an empty array, you need to return it.
*Example*
```python
sort_ar... |
Solve the programming task below in a Python markdown code block.
Your task is simply to count the total number of lowercase letters in a string.
## Examples
Write your solution by modifying this code:
```python
def lowercase_count(strng):
```
Your solution should implemented in the function "lowercase_count". T... |
Solve the programming task below in a Python markdown code block.
You are given two integers a and b. Determine if a+b=15 or a\times b=15 or neither holds.
Note that a+b=15 and a\times b=15 do not hold at the same time.
Constraints
* 1 \leq a,b \leq 15
* All values in input are integers.
Input
Input is given from... |
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