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Create a function that takes an input String and returns a String, where all the uppercase words of the input String are in front and all the lowercase words at the end.
The order of the uppercase and lowercase words should be the order in which they oc... |
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There is a grid, consisting of n rows and m columns. Each cell of the grid is either free or blocked. One of the free cells contains a lab. All the cells beyond the borders of the grid are also blocked.
A crazy robot has escaped from this lab. It is cu... |
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You are given several queries. Each query consists of three integers p, q and b. You need to answer whether the result of p/q in notation with base b is a finite fraction.
A fraction in notation with base b is finite if it contains finite number of num... |
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Vasya studies positional numeral systems. Unfortunately, he often forgets to write the base of notation in which the expression is written. Once he saw a note in his notebook saying a + b = ?, and that the base of the positional notation wasn’t written ... |
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We have a grid with H rows and W columns of squares. We will represent the square at the i-th row from the top and j-th column from the left as (i,\ j). Also, we will define the distance between the squares (i_1,\ j_1) and (i_2,\ j_2) as |i_1 - i_2| + |... |
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Two strings ```a``` and b are called isomorphic if there is a one to one mapping possible for every character of ```a``` to every character of ```b```. And all occurrences of every character in ```a``` map to same character in ```b```.
## Task
In this... |
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Your task it to return ```true``` if the fractional part (rounded to 1 digit) of the result (```a``` / ```b```) exists, more than ```0``` and is multiple of ```n```.
Otherwise return ```false```. (For Python return True or False)
All arguments are posi... |
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There are n seats in the train's car and there is exactly one passenger occupying every seat. The seats are numbered from 1 to n from left to right. The trip is long, so each passenger will become hungry at some moment of time and will go to take boiled... |
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Mishka is trying really hard to avoid being kicked out of the university. In particular, he was doing absolutely nothing for the whole semester, miraculously passed some exams so that just one is left.
There were $n$ classes of that subject during the ... |
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Fox Ciel is participating in a party in Prime Kingdom. There are n foxes there (include Fox Ciel). The i-th fox is ai years old.
They will have dinner around some round tables. You want to distribute foxes such that:
1. Each fox is sitting at some t... |
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During their New Year holidays, Alice and Bob play the following game using an array $a$ of $n$ integers:
Players take turns, Alice moves first.
Each turn a player chooses any element and removes it from the array.
If Alice chooses even value, then s... |
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Ringo Kingdom Congress is voting on a bill.
N members are present, and the i-th member (1 ≤ i ≤ N) has w_i white ballots and b_i blue ballots. Each member i will put all the w_i white ballots into the box if he/she is in favor of the bill, and put all ... |
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A factory produces thimbles in bulk. Typically, it can produce up to a thimbles a day. However, some of the machinery is defective, so it can currently only produce b thimbles each day. The factory intends to choose a k-day period to do maintenance and ... |
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Three friends are going to meet each other. Initially, the first friend stays at the position $x = a$, the second friend stays at the position $x = b$ and the third friend stays at the position $x = c$ on the coordinate axis $Ox$.
In one minute each fr... |
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The only difference between easy and hard versions is constraints.
The BerTV channel every day broadcasts one episode of one of the $k$ TV shows. You know the schedule for the next $n$ days: a sequence of integers $a_1, a_2, \dots, a_n$ ($1 \le a_i \le... |
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# Scenario
*Now that the competition gets tough it will* **_Sort out the men from the boys_** .
**_Men_** are the **_Even numbers_** and **_Boys_** are the **_odd_**  ... |
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Vasya used to be an accountant before the war began and he is one of the few who knows how to operate a computer, so he was assigned as the programmer.
We all know that programs often store sets of integers. For example, if we have a problem about a we... |
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Amicable numbers are two different numbers so related that the sum of the proper divisors of each is equal to the other number. (A proper divisor of a number is a positive factor of that number other than the number itself. For example, the proper divis... |
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One day Vasya decided to have a look at the results of Berland 1910 Football Championship’s finals. Unfortunately he didn't find the overall score of the match; however, he got hold of a profound description of the match's process. On the whole there ar... |
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Monocarp wrote down two numbers on a whiteboard. Both numbers follow a specific format: a positive integer $x$ with $p$ zeros appended to its end.
Now Monocarp asks you to compare these two numbers. Can you help him?
-----Input-----
The first line c... |
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Twilight Sparkle once got a crystal from the Crystal Mine. A crystal of size n (n is odd; n > 1) is an n × n matrix with a diamond inscribed into it.
You are given an odd integer n. You need to draw a crystal of size n. The diamond cells of the matrix ... |
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Take an input string and return a string that is made up of the number of occurences of each english letter in the input followed by that letter, sorted alphabetically. The output string shouldn't contain chars missing from input (chars with 0 occurence... |
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Mobile Display Keystrokes
Do you remember the old mobile display keyboards? Do you also remember how inconvenient it was to write on it?
Well, here you have to calculate how much keystrokes you have to do for a specific word.
This is the layout:
Re... |
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A prime number n (11, 19, 23, etc.) that divides by 4 and has 3 has an interesting property. The results of calculating the remainder of the square of a natural number (1, 2, ..., n -1) of 1 or more and less than n divided by n are the same, so they are... |
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At a geometry lesson Bob learnt that a triangle is called right-angled if it is nondegenerate and one of its angles is right. Bob decided to draw such a triangle immediately: on a sheet of paper he drew three points with integer coordinates, and joined ... |
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This kata is about multiplying a given number by eight if it is an even number and by nine otherwise.
Write your solution by modifying this code:
```python
def simple_multiplication(number) :
```
Your solution should implemented in the function "si... |
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Tanya has $n$ candies numbered from $1$ to $n$. The $i$-th candy has the weight $a_i$.
She plans to eat exactly $n-1$ candies and give the remaining candy to her dad. Tanya eats candies in order of increasing their numbers, exactly one candy per day.
... |
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Description overhauled by V
---
I've invited some kids for my son's birthday, during which I will give to each kid some amount of candies.
Every kid hates receiving less amount of candies than any other kids, and I don't want to have any candies left... |
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Ilya lives in a beautiful city of Chordalsk.
There are $n$ houses on the street Ilya lives, they are numerated from $1$ to $n$ from left to right; the distance between every two neighboring houses is equal to $1$ unit. The neighboring houses are $1$ an... |
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An bydrocarbon is an organic compound which contains only carbons and hydrogens. An isomer is a compound that has the same number of carbons but different structures. Heptane, for example, is a hydrocarbon with 7 carbons. It has nine isomers. The struct... |
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Section numbers are strings of dot-separated integers. The highest level sections (chapters) are numbered 1, 2, 3, etc. Second level sections are numbered 1.1, 1.2, 1.3, 2.1, 2.2, 2.3, etc. Next level sections are numbered 1.1.1, 1.1.2, 1.1.2, 1.2.1, 1.... |
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You are given an array $a$ consisting of $n$ integers.
You can remove at most one element from this array. Thus, the final length of the array is $n-1$ or $n$.
Your task is to calculate the maximum possible length of the strictly increasing contiguous... |
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For a non-negative integer K, we define a fractal of level K as follows:
* A fractal of level 0 is a grid with just one white square.
* When K > 0, a fractal of level K is a 3^K \times 3^K grid. If we divide this grid into nine 3^{K-1} \times 3^{K-1} s... |
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We saw the little game Marmot made for Mole's lunch. Now it's Marmot's dinner time and, as we all know, Marmot eats flowers. At every dinner he eats some red and white flowers. Therefore a dinner can be represented as a sequence of several flowers, some... |
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Vasya and Petya wrote down all integers from 1 to n to play the "powers" game (n can be quite large; however, Vasya and Petya are not confused by this fact).
Players choose numbers in turn (Vasya chooses first). If some number x is chosen at the curren... |
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## Task:
You have to create a function `isPronic` to check whether the argument passed is a Pronic Number and return true if it is & false otherwise.
### Description:
`Pronic Number` -A pronic number, oblong number, rectangular number or heteromecic n... |
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What are you doing at the end of the world? Are you busy? Will you save us?
<image>
Nephren is playing a game with little leprechauns.
She gives them an infinite array of strings, f0... ∞.
f0 is "What are you doing at the end of the world? Are you b... |
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A palindrome is a word, phrase, number, or other sequence of characters which reads the same backward as forward. Examples of numerical palindromes are:
2332
110011
54322345
You'll be given 2 numbers as arguments: ```(num,s)```. Write a function wh... |
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< PREVIOUS KATA
NEXT KATA >
###Task:
You have to write a function `pattern` which returns the following Pattern(See Examples) upto (3n-2) rows, where n is parameter.
* Note:`Returning` the pattern is not the same as `Printing` the pattern.
####Rule... |
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The cows have just learned what a primitive root is! Given a prime p, a primitive root $\operatorname{mod} p$ is an integer x (1 ≤ x < p) such that none of integers x - 1, x^2 - 1, ..., x^{p} - 2 - 1 are divisible by p, but x^{p} - 1 - 1 is.
Unfortuna... |
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Problem Statement
In the headquarter building of ICPC (International Company of Plugs & Connectors), there are $M$ light bulbs and they are controlled by $N$ switches. Each light bulb can be turned on or off by exactly one switch. Each switch may contr... |
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There is data that records the altitude of mountains that have been climbed so far. Create a program that reads this data and outputs the elevation difference between the highest and lowest mountains.
Input
The input is given in the following format... |
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There are n workers in a company, each of them has a unique id from 1 to n. Exaclty one of them is a chief, his id is s. Each worker except the chief has exactly one immediate superior.
There was a request to each of the workers to tell how how many su... |
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In Wolf town there are 2 big markets S and T. The distance between these markets is D. Chef Ciel would like to run 2 restaurants in Wolf town, where the first restaurant will be supplied by the market S and the second one will be supplied by the market ... |
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This is an interactive problem.
You are given a sorted in increasing order singly linked list. You should find the minimum integer in the list which is greater than or equal to x.
More formally, there is a singly liked list built on an array of n elem... |
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We have a string S consisting of lowercase English letters.
If the length of S is at most K, print S without change.
If the length of S exceeds K, extract the first K characters in S, append ... to the end of them, and print the result.
-----Constraint... |
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## Task
To charge your mobile phone battery, do you know how much time it takes from 0% to 100%? It depends on your cell phone battery capacity and the power of the charger. A rough calculation method is:
```
0% --> 85% (fast charge)
(battery capacity... |
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Kavi has 2n points lying on the OX axis, i-th of which is located at x = i.
Kavi considers all ways to split these 2n points into n pairs. Among those, he is interested in good pairings, which are defined as follows:
Consider n segments with ends at t... |
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You are given an array of integers. Vasya can permute (change order) its integers. He wants to do it so that as many as possible integers will become on a place where a smaller integer used to stand. Help Vasya find the maximal number of such integers.
... |
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Have you ever tasted Martian food? Well, you should.
Their signature dish is served on a completely black plate with the radius of R, flat as a pancake.
First, they put a perfectly circular portion of the Golden Honduras on the plate. It has the radiu... |
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You are a given an array $a$ of length $n$. Find a subarray $a[l..r]$ with length at least $k$ with the largest median.
A median in an array of length $n$ is an element which occupies position number $\lfloor \frac{n + 1}{2} \rfloor$ after we sort the ... |
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Snuke lives at position x on a number line.
On this line, there are two stores A and B, respectively at position a and b, that offer food for delivery.
Snuke decided to get food delivery from the closer of stores A and B.
Find out which store is closer ... |
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### What is simplifying a square root?
If you have a number, like 80, for example, you would start by finding the greatest perfect square divisible by 80. In this case, that's 16. Find the square root of 16, and multiply it by 80 / 16. Answer = 4 √5.
... |
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Simple transposition is a basic and simple cryptography technique. We make 2 rows and put first a letter in the Row 1, the second in the Row 2, third in Row 1 and so on until the end. Then we put the text from Row 2 next to the Row 1 text and thats it.
... |
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Example
Input
2 2 2 1
0 0 0
Output
24
Read the inputs from stdin solve the problem and write the answer to stdout (do not directly test on the sample inputs). Enclose your code within ```python delimiters. |
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Recently Vova found $n$ candy wrappers. He remembers that he bought $x$ candies during the first day, $2x$ candies during the second day, $4x$ candies during the third day, $\dots$, $2^{k-1} x$ candies during the $k$-th day. But there is an issue: Vova ... |
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You are given a string of length N. Calculate the number of distinct substrings of S.
Constraints
* 1 \leq N \leq 500,000
* S consists of lowercase English letters.
Input
Input is given from Standard Input in the following format:
S
Output
Prin... |
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Snuke has decided to use a robot to clean his room.
There are N pieces of trash on a number line. The i-th piece from the left is at position x_i. We would like to put all of them in a trash bin at position 0.
For the positions of the pieces of trash,... |
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The winner of the card game popular in Berland "Berlogging" is determined according to the following rules. If at the end of the game there is only one player with the maximum number of points, he is the winner. The situation becomes more difficult if t... |
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Problem statement
2D, who is good at cooking, is trying to make lunch. Cooking requires all N ingredients a_ {0}, a_ {1},…, a_ {N−1}.
Now, 2D's refrigerator doesn't contain any ingredients, so I have to go to the supermarket to buy it. At the supermar... |
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Your friend gave you a dequeue D as a birthday present.
D is a horizontal cylinder that contains a row of N jewels.
The values of the jewels are V_1, V_2, ..., V_N from left to right. There may be jewels with negative values.
In the beginning, you have ... |
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A permutation p of size n is an array such that every integer from 1 to n occurs exactly once in this array.
Let's call a permutation an almost identity permutation iff there exist at least n - k indices i (1 ≤ i ≤ n) such that p_{i} = i.
Your task is... |
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problem
You are a traveler traveling on the JOI Highway. The JOI Highway is a road that extends straight from east to west, and there are n post towns on the JOI Highway. Numbered. The westernmost post town on the JOI highway is post town 1, and the ea... |
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Petya loves lucky numbers very much. Everybody knows that lucky numbers are positive integers whose decimal record contains only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky and 5, 17, 467 are not.
Petya calls a mask of a positiv... |
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Kilani is playing a game with his friends. This game can be represented as a grid of size $n \times m$, where each cell is either empty or blocked, and every player has one or more castles in some cells (there are no two castles in one cell).
The game ... |
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Our master carpenter is designing a condominium called Bange Hills Mansion. The condominium is constructed by stacking up floors of the same height. The height of each floor is designed so that the total height of the stacked floors coincides with the p... |
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Vladik often travels by trains. He remembered some of his trips especially well and I would like to tell you about one of these trips:
Vladik is at initial train station, and now n people (including Vladik) want to get on the train. They are already li... |
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The Smart Beaver from ABBYY decided to have a day off. But doing nothing the whole day turned out to be too boring, and he decided to play a game with pebbles. Initially, the Beaver has n pebbles. He arranges them in a equal rows, each row has b pebbles... |
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Our world is one-dimensional, and ruled by two empires called Empire A and Empire B.
The capital of Empire A is located at coordinate X, and that of Empire B is located at coordinate Y.
One day, Empire A becomes inclined to put the cities at coordinates... |
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Let's call an array $a$ consisting of $n$ positive (greater than $0$) integers beautiful if the following condition is held for every $i$ from $1$ to $n$: either $a_i = 1$, or at least one of the numbers $a_i - 1$ and $a_i - 2$ exists in the array as we... |
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Permutation $p$ is a sequence of integers $p=[p_1, p_2, \dots, p_n]$, consisting of $n$ distinct (unique) positive integers between $1$ and $n$, inclusive. For example, the following sequences are permutations: $[3, 4, 1, 2]$, $[1]$, $[1, 2]$. The follo... |
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We define the function `f1(n,k)`, as the least multiple of `n` that has all its digits less than `k`.
We define the function `f2(n,k)`, as the least multiple of `n` that has all the digits that are less than `k`.
Each digit may occur more than once i... |
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Alice guesses the strings that Bob made for her.
At first, Bob came up with the secret string $a$ consisting of lowercase English letters. The string $a$ has a length of $2$ or more characters. Then, from string $a$ he builds a new string $b$ and offer... |
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Mashmokh's boss, Bimokh, didn't like Mashmokh. So he fired him. Mashmokh decided to go to university and participate in ACM instead of finding a new job. He wants to become a member of Bamokh's team. In order to join he was given some programming tasks ... |
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Have you ever had an infinite loop when you ran a hard-working program? It would be convenient to be able to determine in advance whether a program will stop executing without having to execute it.
Unfortunately, it is not possible to make such a decis... |
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Finally, a basketball court has been opened in SIS, so Demid has decided to hold a basketball exercise session. $2 \cdot n$ students have come to Demid's exercise session, and he lined up them into two rows of the same size (there are exactly $n$ people... |
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There is a rectangular grid of n rows of m initially-white cells each.
Arkady performed a certain number (possibly zero) of operations on it. In the i-th operation, a non-empty subset of rows R_{i} and a non-empty subset of columns C_{i} are chosen. Fo... |
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Takahashi is standing on a two-dimensional plane, facing north. Find the minimum positive integer K such that Takahashi will be at the starting position again after he does the following action K times:
* Go one meter in the direction he is facing. The... |
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Number of tanka
Wishing to die in the spring under the flowers
This is one of the famous tanka poems that Saigyo Hoshi wrote. Tanka is a type of waka poem that has been popular in Japan for a long time, and most of it consists of five phrases and thir... |
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You are given an array of non-negative integers, your task is to complete the series from 0 to the highest number in the array.
If the numbers in the sequence provided are not in order you should order them, but if a value repeats, then you must return... |
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Paladin Manao caught the trail of the ancient Book of Evil in a swampy area. This area contains n settlements numbered from 1 to n. Moving through the swamp is very difficult, so people tramped exactly n - 1 paths. Each of these paths connects some pair... |
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Polycarp has found a table having an infinite number of rows and columns. The rows are numbered from $1$, starting from the topmost one. The columns are numbered from $1$, starting from the leftmost one.
Initially, the table hasn't been filled and Poly... |
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To celebrate the start of the Rio Olympics (and the return of 'the Last Leg' on C4 tonight) this is an Olympic inspired kata.
Given a string of random letters, you need to examine each. Some letters naturally have 'rings' in them. 'O' is an obvious exa... |
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The Little Elephant loves chess very much.
One day the Little Elephant and his friend decided to play chess. They've got the chess pieces but the board is a problem. They've got an 8 × 8 checkered board, each square is painted either black or white. T... |
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The semester is already ending, so Danil made an effort and decided to visit a lesson on harmony analysis to know how does the professor look like, at least. Danil was very bored on this lesson until the teacher gave the group a simple task: find 4 vect... |
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Every Codeforces user has rating, described with one integer, possibly negative or zero. Users are divided into two divisions. The first division is for users with rating 1900 or higher. Those with rating 1899 or lower belong to the second division. In ... |
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Reca company makes monitors, the most popular of their models is AB999 with the screen size a × b centimeters. Because of some production peculiarities a screen parameters are integer numbers. Recently the screen sides ratio x: y became popular with use... |
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Recall that the permutation is an array consisting of $n$ distinct integers from $1$ to $n$ in arbitrary order. For example, $[2,3,1,5,4]$ is a permutation, but $[1,2,2]$ is not a permutation ($2$ appears twice in the array) and $[1,3,4]$ is also not a ... |
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The Cybermen solved that first test much quicker than the Daleks. Luckily for us, the Daleks were angry (shocking!) and they destroyed some of the Cybermen.
After the fighting stopped, Heidi gave them another task to waste their time on.
There are $n$... |
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Programmer Sasha has recently begun to study data structures. His coach Stas told him to solve the problem of finding a minimum on the segment of the array in <image>, which Sasha coped with. For Sasha not to think that he had learned all, Stas gave him... |
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If we alternate the vowels and consonants in the string `"have"`, we get the following list, arranged alphabetically:
`['ahev', 'aveh', 'ehav', 'evah', 'vahe', 'veha']`. These are the only possibilities in which vowels and consonants are alternated. The... |
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Division of Big Integers
Given two integers $A$ and $B$, compute the quotient, $\frac{A}{B}$. Round down to the nearest decimal.
Input
Two integers $A$ and $B$ separated by a space character are given in a line.
Output
Print the quotient in a line.... |
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Vasya has n items lying in a line. The items are consecutively numbered by numbers from 1 to n in such a way that the leftmost item has number 1, the rightmost item has number n. Each item has a weight, the i-th item weights wi kilograms.
Vasya needs t... |
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Rng is going to a festival.
The name of the festival is given to you as a string S, which ends with `FESTIVAL`, from input. Answer the question: "Rng is going to a festival of what?" Output the answer.
Here, assume that the name of "a festival of s" i... |
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problem
I want to put as many rectangular tiles as possible on a rectangular wall with a size of $ h $ in height and $ w $ in width, and a size of $ a $ in height and $ b $ in width.
The following conditions must be met when attaching tiles.
* Do no... |
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You are given three integers $a$, $b$, and $c$. Determine if one of them is the sum of the other two.
-----Input-----
The first line contains a single integer $t$ ($1 \leq t \leq 9261$) — the number of test cases.
The description of each test case c... |
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As a strict big brother, I do limit my young brother Vasya on time he spends on computer games. I define a prime-time as a time period till which Vasya have a permission to play computer games. I specify start hour and end hour as pair of integers.
I n... |
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As you know, majority of students and teachers of Summer Informatics School live in Berland for the most part of the year. Since corruption there is quite widespread, the following story is not uncommon.
Elections are coming. You know the number of vot... |
Solve the programming task below in a Python markdown code block.
You are given a rectangular board of M × N squares. Also you are given an unlimited number of standard domino pieces of 2 × 1 squares. You are allowed to rotate the pieces. You are asked to place as many dominoes as possible on the board so as to meet t... |
Solve the programming task below in a Python markdown code block.
# Task
**_Given_** *a number* , **_Return_** **_The Maximum number _** *could be formed from the digits of the number given* .
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# Notes
* **_Only Natural numbers_** *passed to the function , numbers Contain digits [0:9] inclusive*
* **_Digit... |
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