question large_stringlengths 265 13.2k |
|---|
Solve the programming task below in a Python markdown code block.
Cyael is a teacher at a very famous school in Byteland and she is known by her students for being very polite to them and also to encourage them to get good marks on their tests.
Then, if they get good marks she will reward them with candies :) However,... |
Solve the programming task below in a Python markdown code block.
Let's define a good tree:It is a tree with k * n nodes labeled from 0 to k * n - 1
Node i and node j are not adjacent, for all 0 ≤ i, j < k * n such that i div k = j div k (here div means integer division. E.g. 7 div 2 = 3)
Given n and k, how many dif... |
Solve the programming task below in a Python markdown code block.
# Task
Given a sorted array of integers `A`, find such an integer x that the value of `abs(A[0] - x) + abs(A[1] - x) + ... + abs(A[A.length - 1] - x)`
is the smallest possible (here abs denotes the `absolute value`).
If there are several possible ans... |
Solve the programming task below in a Python markdown code block.
At the first holiday in spring, the town Shortriver traditionally conducts a flower festival. Townsfolk wear traditional wreaths during these festivals. Each wreath contains exactly $k$ flowers.
The work material for the wreaths for all $n$ citizens of... |
Solve the programming task below in a Python markdown code block.
Snuke has decided to construct a string that starts with A and ends with Z, by taking out a substring of a string s (that is, a consecutive part of s).
Find the greatest length of the string Snuke can construct. Here, the test set guarantees that there ... |
Solve the programming task below in a Python markdown code block.
There are two cameras which observe the up line and the down line respectively on the double lane (please see the following figure). These cameras are located on a line perpendicular to the lane, and we call the line 'monitoring line.' (the red line in ... |
Solve the programming task below in a Python markdown code block.
Given is a positive even number N.
Find the number of strings s of length N consisting of `A`, `B`, and `C` that satisfy the following condition:
* s can be converted to the empty string by repeating the following operation:
* Choose two consecutive c... |
Solve the programming task below in a Python markdown code block.
Alice, the president of club FCB, wants to build a team for the new volleyball tournament. The team should consist of p players playing in p different positions. She also recognizes the importance of audience support, so she wants to select k people as ... |
Solve the programming task below in a Python markdown code block.
A number is self-descriptive when the n'th digit describes the amount n appears in the number.
E.g. 21200:
There are two 0's in the number, so the first digit is 2.
There is one 1 in the number, so the second digit is 1.
There are two 2's in the num... |
Solve the programming task below in a Python markdown code block.
This version of the problem differs from the next one only in the constraint on n.
Note that the memory limit in this problem is lower than in others.
You have a vertical strip with n cells, numbered consecutively from 1 to n from top to bottom.
You ... |
Solve the programming task below in a Python markdown code block.
Limak and Radewoosh are going to compete against each other in the upcoming algorithmic contest. They are equally skilled but they won't solve problems in the same order.
There will be n problems. The i-th problem has initial score p_{i} and it takes e... |
Solve the programming task below in a Python markdown code block.
# Background
My pet bridge-maker ants are marching across a terrain from left to right.
If they encounter a gap, the first one stops and then next one climbs over him, then the next, and the next, until a bridge is formed across the gap.
What clever... |
Solve the programming task below in a Python markdown code block.
There is an N-car train.
You are given an integer i. Find the value of j such that the following statement is true: "the i-th car from the front of the train is the j-th car from the back."
-----Constraints-----
- 1 \leq N \leq 100
- 1 \leq i \leq N
... |
Solve the programming task below in a Python markdown code block.
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.
A triangular number is the number of dots in an equilateral triangle uniformly filled with dots. For example, three dots can be arranged in a triangle; thus three is a triangular number. The n-th triangular number is the number of dots in a triangle wit... |
Solve the programming task below in a Python markdown code block.
Takahashi has come to an integer shop to buy an integer.
The shop sells the integers from 1 through 10^9. The integer N is sold for A \times N + B \times d(N) yen (the currency of Japan), where d(N) is the number of digits in the decimal notation of N.
... |
Solve the programming task below in a Python markdown code block.
Read problems statements in Mandarin Chinese and Russian as well.
Petr, Nikita G. and Nikita are the most influential music critics in Saint-Petersburg. They have recently downloaded their favorite band's new album and going to listen to it. Nikita cl... |
Solve the programming task below in a Python markdown code block.
Devu and his brother love each other a lot. As they are super geeks, they only like to play with arrays. They are given two arrays a and b by their father. The array a is given to Devu and b to his brother.
As Devu is really a naughty kid, he wants th... |
Solve the programming task below in a Python markdown code block.
VK news recommendation system daily selects interesting publications of one of $n$ disjoint categories for each user. Each publication belongs to exactly one category. For each category $i$ batch algorithm selects $a_i$ publications.
The latest A/B tes... |
Solve the programming task below in a Python markdown code block.
We have a permutation p = {p_1,\ p_2,\ ...,\ p_n} of {1,\ 2,\ ...,\ n}.
Print the number of elements p_i (1 < i < n) that satisfy the following condition:
- p_i is the second smallest number among the three numbers p_{i - 1}, p_i, and p_{i + 1}.
-----... |
Solve the programming task below in a Python markdown code block.
Tokitsukaze is playing a game derivated from Japanese mahjong. In this game, she has three tiles in her hand. Each tile she owns is a suited tile, which means it has a suit (manzu, pinzu or souzu) and a number (a digit ranged from $1$ to $9$). In this p... |
Solve the programming task below in a Python markdown code block.
Fox Ciel is developing an artificial intelligence (AI) for a game. This game is described as a game tree T with n vertices. Each node in the game has an evaluation value which shows how good a situation is. This value is the same as maximum value of chi... |
Solve the programming task below in a Python markdown code block.
We have N locked treasure boxes, numbered 1 to N.
A shop sells M keys. The i-th key is sold for a_i yen (the currency of Japan), and it can unlock b_i of the boxes: Box c_{i1}, c_{i2}, ..., c_{i{b_i}}. Each key purchased can be used any number of times.... |
Solve the programming task below in a Python markdown code block.
You're given an array $a$ of length $n$. You can perform the following operation on it as many times as you want: Pick two integers $i$ and $j$ $(1 \le i,j \le n)$ such that $a_i+a_j$ is odd, then swap $a_i$ and $a_j$.
What is lexicographically the s... |
Solve the programming task below in a Python markdown code block.
There are n children in Jzzhu's school. Jzzhu is going to give some candies to them. Let's number all the children from 1 to n. The i-th child wants to get at least a_{i} candies.
Jzzhu asks children to line up. Initially, the i-th child stands at the ... |
Solve the programming task below in a Python markdown code block.
Create a function that transforms any positive number to a string representing the number in words. The function should work for all numbers between 0 and 999999.
### Examples
```
number2words(0) ==> "zero"
number2words(1) ==> "one"
number2words(... |
Solve the programming task below in a Python markdown code block.
Vasya follows a basketball game and marks the distances from which each team makes a throw. He knows that each successful throw has value of either 2 or 3 points. A throw is worth 2 points if the distance it was made from doesn't exceed some value of d ... |
Solve the programming task below in a Python markdown code block.
Adilbek was assigned to a special project. For Adilbek it means that he has $n$ days to run a special program and provide its results. But there is a problem: the program needs to run for $d$ days to calculate the results.
Fortunately, Adilbek can opti... |
Solve the programming task below in a Python markdown code block.
You are given a string S of length n with each character being one of the first m lowercase English letters.
Calculate how many different strings T of length n composed from the first m lowercase English letters exist such that the length of LCS (long... |
Solve the programming task below in a Python markdown code block.
Read problems statements in Mandarin Chinese and Russian as well.
Euler's phi function for a positive integer N is usually denoted as φ(N) and defined as the number of positive integers less than or equal to N that are coprime with N. Let's call a p... |
Solve the programming task below in a Python markdown code block.
In cryptography, Caesar cipher is one of the simplest and most widely known encryption method. Caesar cipher is a type of substitution cipher in which each letter in the text is replaced by a letter some fixed number of positions down the alphabet. For ... |
Solve the programming task below in a Python markdown code block.
One day, early in the morning, you decided to buy yourself a bag of chips in the nearby store. The store has chips of $n$ different flavors. A bag of the $i$-th flavor costs $a_i$ burles.
The store may run out of some flavors, so you'll decide which on... |
Solve the programming task below in a Python markdown code block.
You are given a string $s$ consisting of exactly $n$ characters, and each character is either '0', '1' or '2'. Such strings are called ternary strings.
Your task is to replace minimum number of characters in this string with other characters to obtain ... |
Solve the programming task below in a Python markdown code block.
You are given an array $a$ of length $2n$. Consider a partition of array $a$ into two subsequences $p$ and $q$ of length $n$ each (each element of array $a$ should be in exactly one subsequence: either in $p$ or in $q$).
Let's sort $p$ in non-decreasin... |
Solve the programming task below in a Python markdown code block.
Is there anything better than going to the zoo after a tiresome week at work? No wonder Grisha feels the same while spending the entire weekend accompanied by pretty striped zebras.
Inspired by this adventure and an accidentally found plasticine pack ... |
Solve the programming task below in a Python markdown code block.
Alice and Bob are controlling a robot. They each have one switch that controls the robot.
Alice started holding down her button A second after the start-up of the robot, and released her button B second after the start-up.
Bob started holding down his... |
Solve the programming task below in a Python markdown code block.
There's a new security company in Paris, and they decided to give their employees an algorithm to make first name recognition faster. In the blink of an eye, they can now detect if a string is a first name, no matter if it is a one-word name or an hyphe... |
Solve the programming task below in a Python markdown code block.
You a captain of a ship. Initially you are standing in a point $(x_1, y_1)$ (obviously, all positions in the sea can be described by cartesian plane) and you want to travel to a point $(x_2, y_2)$.
You know the weather forecast — the string $s$ of len... |
Solve the programming task below in a Python markdown code block.
You are policeman and you are playing a game with Slavik. The game is turn-based and each turn consists of two phases. During the first phase you make your move and during the second phase Slavik makes his move.
There are $n$ doors, the $i$-th door ini... |
Solve the programming task below in a Python markdown code block.
Gennady is one of the best child dentists in Berland. Today n children got an appointment with him, they lined up in front of his office.
All children love to cry loudly at the reception at the dentist. We enumerate the children with integers from 1 to... |
Solve the programming task below in a Python markdown code block.
Tree is a connected graph without cycles. A leaf of a tree is any vertex connected with exactly one other vertex.
You are given a tree with n vertices and a root in the vertex 1. There is an ant in each leaf of the tree. In one second some ants can sim... |
Solve the programming task below in a Python markdown code block.
Luke Skywalker gave Chewbacca an integer number x. Chewbacca isn't good at numbers but he loves inverting digits in them. Inverting digit t means replacing it with digit 9 - t.
Help Chewbacca to transform the initial number x to the minimum possible p... |
Solve the programming task below in a Python markdown code block.
Let f(A, B), where A and B are positive integers, be the string satisfying the following conditions:
* f(A, B) has length A + B;
* f(A, B) contains exactly A letters `A` and exactly B letters `B`;
* The length of the longest substring of f(A, B) consis... |
Solve the programming task below in a Python markdown code block.
The cities of Byteland and Berland are located on the axis $Ox$. In addition, on this axis there are also disputed cities, which belong to each of the countries in their opinion. Thus, on the line $Ox$ there are three types of cities: the cities of Byt... |
Solve the programming task below in a Python markdown code block.
Blake is a CEO of a large company called "Blake Technologies". He loves his company very much and he thinks that his company should be the best. That is why every candidate needs to pass through the interview that consists of the following problem.
We ... |
Solve the programming task below in a Python markdown code block.
Petya loves lucky numbers. Everybody knows that lucky numbers are positive integers whose decimal representation 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 number almost lucky... |
Solve the programming task below in a Python markdown code block.
Let's introduce the designation <image>, where x is a string, n is a positive integer and operation " + " is the string concatenation operation. For example, [abc, 2] = abcabc.
We'll say that string s can be obtained from string t, if we can remove som... |
Solve the programming task below in a Python markdown code block.
Your task is to create a new implementation of `modpow` so that it computes `(x^y)%n` for large `y`. The problem with the current implementation is that the output of `Math.pow` is so large on our inputs that it won't fit in a 64-bit float.
You're also... |
Solve the programming task below in a Python markdown code block.
Anadi has a set of dominoes. Every domino has two parts, and each part contains some dots. For every $a$ and $b$ such that $1 \leq a \leq b \leq 6$, there is exactly one domino with $a$ dots on one half and $b$ dots on the other half. The set contains e... |
Solve the programming task below in a Python markdown code block.
How many integer sequences A_1,A_2,\ldots,A_N of length N satisfy all of the following conditions?
- 0 \leq A_i \leq 9
- There exists some i such that A_i=0 holds.
- There exists some i such that A_i=9 holds.
The answer can be very large, so output i... |
Solve the programming task below in a Python markdown code block.
We have N voting papers. The i-th vote (1 \leq i \leq N) has the string S_i written on it.
Print all strings that are written on the most number of votes, in lexicographical order.
-----Constraints-----
- 1 \leq N \leq 2 \times 10^5
- S_i (1 \leq i \... |
Solve the programming task below in a Python markdown code block.
After reaching your destination, you want to build a new colony on the new planet. Since this planet has many mountains and the colony must be built on a flat surface you decided to flatten the mountains using boulders (you are still dreaming so this ma... |
Solve the programming task below in a Python markdown code block.
For a given array $a_1, a_2, a_3, ... , a_N$ of $N$ elements and an integer $S$, find the smallest sub-array size (smallest window length) where the sum of the sub-array is greater than or equal to $S$. If there is not such sub-array, report 0.
Constra... |
Solve the programming task below in a Python markdown code block.
Jenny is 9 years old. She is the youngest detective in North America. Jenny is a 3rd grader student, so when a new mission comes up, she gets a code to decipher in a form of a sticker (with numbers) in her math notebook and a comment (a sentence) in her... |
Solve the programming task below in a Python markdown code block.
B: Periodic Sequence-
problem
Dr. Period, a professor at H University, is studying a property called the cycle that is supposed to be hidden in all things. As a generally known basic cycle, a cycle hidden in a sequence may be considered. That is, if t... |
Solve the programming task below in a Python markdown code block.
Generous sponsors of the olympiad in which Chloe and Vladik took part allowed all the participants to choose a prize for them on their own. Christmas is coming, so sponsors decided to decorate the Christmas tree with their prizes.
They took n prizes f... |
Solve the programming task below in a Python markdown code block.
Beroffice text editor has a wide range of features that help working with text. One of the features is an automatic search for typos and suggestions of how to fix them.
Beroffice works only with small English letters (i.e. with 26 letters from a to z).... |
Solve the programming task below in a Python markdown code block.
Create a function which accepts one arbitrary string as an argument, and return a string of length 26.
The objective is to set each of the 26 characters of the output string to either `'1'` or `'0'` based on the fact whether the Nth letter of the alpha... |
Solve the programming task below in a Python markdown code block.
The translation from the Berland language into the Birland language is not an easy task. Those languages are very similar: a berlandish word differs from a birlandish word with the same meaning a little: it is spelled (and pronounced) reversely. For exa... |
Solve the programming task below in a Python markdown code block.
If you finish this kata, you can try [Insane Coloured Triangles](http://www.codewars.com/kata/insane-coloured-triangles) by Bubbler, which is a ***much*** harder version of this one.
A coloured triangle is created from a row of colours, each of which i... |
Solve the programming task below in a Python markdown code block.
Alice and Bob decided to eat some fruit. In the kitchen they found a large bag of oranges and apples. Alice immediately took an orange for herself, Bob took an apple. To make the process of sharing the remaining fruit more fun, the friends decided to pl... |
Solve the programming task below in a Python markdown code block.
In a Berland's zoo there is an enclosure with camels. It is known that camels like to spit. Bob watched these interesting animals for the whole day and registered in his notepad where each animal spitted. Now he wants to know if in the zoo there are two... |
Solve the programming task below in a Python markdown code block.
Remember the movie with David Bowie: 'The Labyrinth'?
You can remember your childhood here: https://www.youtube.com/watch?v=2dgmgub8mHw
In this scene the girl is faced with two 'Knights" and two doors. One door leads the castle where the Goblin King a... |
Solve the programming task below in a Python markdown code block.
Mrs. Smith is trying to contact her husband, John Smith, but she forgot the secret phone number!
The only thing Mrs. Smith remembered was that any permutation of $n$ can be a secret phone number. Only those permutations that minimize secret value might... |
Solve the programming task below in a Python markdown code block.
You are given two lists of segments $[al_1, ar_1], [al_2, ar_2], \dots, [al_n, ar_n]$ and $[bl_1, br_1], [bl_2, br_2], \dots, [bl_n, br_n]$.
Initially, all segments $[al_i, ar_i]$ are equal to $[l_1, r_1]$ and all segments $[bl_i, br_i]$ are equal to $... |
Solve the programming task below in a Python markdown code block.
Vanya decided to walk in the field of size n × n cells. The field contains m apple trees, the i-th apple tree is at the cell with coordinates (xi, yi). Vanya moves towards vector (dx, dy). That means that if Vanya is now at the cell (x, y), then in a se... |
Solve the programming task below in a Python markdown code block.
Nastya received a gift on New Year — a magic wardrobe. It is magic because in the end of each month the number of dresses in it doubles (i.e. the number of dresses becomes twice as large as it is in the beginning of the month).
Unfortunately, right aft... |
Solve the programming task below in a Python markdown code block.
You are given a connected undirected graph consisting of $n$ vertices and $m$ edges. There are no self-loops or multiple edges in the given graph.
You have to direct its edges in such a way that the obtained directed graph does not contain any paths of... |
Solve the programming task below in a Python markdown code block.
It is a balmy spring afternoon, and Farmer John's n cows are ruminating about link-cut cacti in their stalls. The cows, labeled 1 through n, are arranged so that the i-th cow occupies the i-th stall from the left. However, Elsie, after realizing that sh... |
Solve the programming task below in a Python markdown code block.
In this Kata, you will be given a number and your task will be to rearrange the number so that it is divisible by `25`, but without leading zeros. Return the minimum number of digit moves that are needed to make this possible. If impossible, return `-1`... |
Solve the programming task below in a Python markdown code block.
Asterix, Obelix and their temporary buddies Suffix and Prefix has finally found the Harmony temple. However, its doors were firmly locked and even Obelix had no luck opening them.
A little later they found a string s, carved on a rock below the temple'... |
Solve the programming task below in a Python markdown code block.
Your task is to write an update for a lottery machine. Its current version produces a sequence of random letters and integers (passed as a string to the function). Your code must filter out all letters and return **unique** integers as a string, in thei... |
Solve the programming task below in a Python markdown code block.
ZS the Coder loves to read the dictionary. He thinks that a word is nice if there exists a substring (contiguous segment of letters) of it of length 26 where each letter of English alphabet appears exactly once. In particular, if the string has length s... |
Solve the programming task below in a Python markdown code block.
A permutation is a sequence of integers from 1 to n of length n containing each number exactly once. For example, (1), (4, 3, 5, 1, 2), (3, 2, 1) are permutations, and (1, 1), (4, 3, 1), (2, 3, 4) are not.
There are many tasks on permutations. Today y... |
Solve the programming task below in a Python markdown code block.
You are given a sequence with N integers: A = \{ A_1, A_2, \cdots, A_N \}.
For each of these N integers, we will choose a color and paint the integer with that color. Here the following condition must be satisfied:
- If A_i and A_j (i < j) are painted ... |
Solve the programming task below in a Python markdown code block.
Barney lives in NYC. NYC has infinite number of intersections numbered with positive integers starting from 1. There exists a bidirectional road between intersections i and 2i and another road between i and 2i + 1 for every positive integer i. You can c... |
Solve the programming task below in a Python markdown code block.
Vasya got really tired of these credits (from problem F) and now wants to earn the money himself! He decided to make a contest to gain a profit.
Vasya has $n$ problems to choose from. They are numbered from $1$ to $n$. The difficulty of the $i$-th prob... |
Solve the programming task below in a Python markdown code block.
You are given a permutation p consisting of n integers 1, 2, ..., n (a permutation is an array where each element from 1 to n occurs exactly once).
Let's call an array a bipartite if the following undirected graph is bipartite:
* the graph consists ... |
Solve the programming task below in a Python markdown code block.
We have N cards numbered 1, 2, ..., N. Card i (1 \leq i \leq N) has an integer A_i written in red ink on one side and an integer B_i written in blue ink on the other side. Initially, these cards are arranged from left to right in the order from Card 1 t... |
Solve the programming task below in a Python markdown code block.
Given is a sequence of integers A_1, A_2, ..., A_N.
If its elements are pairwise distinct, print YES; otherwise, print NO.
-----Constraints-----
- 2 ≤ N ≤ 200000
- 1 ≤ A_i ≤ 10^9
- All values in input are integers.
-----Input-----
Input is given fr... |
Solve the programming task below in a Python markdown code block.
Iahub got bored, so he invented a game to be played on paper.
He writes n integers a1, a2, ..., an. Each of those integers can be either 0 or 1. He's allowed to do exactly one move: he chooses two indices i and j (1 ≤ i ≤ j ≤ n) and flips all values ak... |
Solve the programming task below in a Python markdown code block.
Tokitsukaze has two colorful tapes. There are $n$ distinct colors, numbered $1$ through $n$, and each color appears exactly once on each of the two tapes. Denote the color of the $i$-th position of the first tape as $ca_i$, and the color of the $i$-th p... |
Solve the programming task below in a Python markdown code block.
Lena is the most economical girl in Moscow. So, when her dad asks her to buy some food for a trip to the country, she goes to the best store — "PriceFixed". Here are some rules of that store:
The store has an infinite number of items of every product.... |
Solve the programming task below in a Python markdown code block.
In CODE FESTIVAL XXXX, there are N+1 participants from all over the world, including Takahashi.
Takahashi checked and found that the time gap (defined below) between the local times in his city and the i-th person's city was D_i hours. The time gap bet... |
Solve the programming task below in a Python markdown code block.
Snuke got positive integers s_1,...,s_N from his mother, as a birthday present. There may be duplicate elements.
He will circle some of these N integers. Since he dislikes cubic numbers, he wants to ensure that if both s_i and s_j (i ≠ j) are circled, ... |
Solve the programming task below in a Python markdown code block.
You are given a positive integer X.
Find the largest perfect power that is at most X.
Here, a perfect power is an integer that can be represented as b^p, where b is an integer not less than 1 and p is an integer not less than 2.
-----Constraints-----
... |
Solve the programming task below in a Python markdown code block.
Having read half of the book called "Storm and Calm" on the IT lesson, Innocentius was absolutely determined to finish the book on the maths lessons. All was fine until the math teacher Ms. Watkins saw Innocentius reading fiction books instead of solvin... |
Solve the programming task below in a Python markdown code block.
Bob and Alice are often participating in various programming competitions. Like many competitive programmers, Alice and Bob have good and bad days. They noticed, that their lucky and unlucky days are repeating with some period. For example, for Alice da... |
Solve the programming task below in a Python markdown code block.
Dice Stamp
Dice stamp
At a local fair, you found a game store you've never seen before. This is a game in which N 6-sided dice are dropped and rolled on the board. More precisely, N buttons are tied to N dice on a one-to-one basis, and pressing the bu... |
Solve the programming task below in a Python markdown code block.
For a given sequence A = {a0, a1, ... , an-1}, find the length of the longest increasing subsequnece (LIS) in A.
An increasing subsequence of A is defined by a subsequence {ai0, ai1, ... , aik} where 0 ≤ i0 < i1 < ... < ik < n and ai0 < ai1 < ... < aik... |
Solve the programming task below in a Python markdown code block.
problem
Hanako is playing with n (4 ≤ n ≤ 10) cards side by side. Each card has one integer between 1 and 99. Hanako chose k cards (2 ≤ k ≤ 4) from these cards and arranged them in a horizontal row to make an integer. How many kinds of integers can Han... |
Solve the programming task below in a Python markdown code block.
Petya is a beginner programmer. He has already mastered the basics of the C++ language and moved on to learning algorithms. The first algorithm he encountered was insertion sort. Petya has already written the code that implements this algorithm and sort... |
Solve the programming task below in a Python markdown code block.
On a certain meeting of a ruling party "A" minister Pavel suggested to improve the sewer system and to create a new pipe in the city.
The city is an n × m rectangular squared field. Each square of the field is either empty (then the pipe can go in it),... |
Solve the programming task below in a Python markdown code block.
Vasya decided to learn to play chess. Classic chess doesn't seem interesting to him, so he plays his own sort of chess.
The queen is the piece that captures all squares on its vertical, horizontal and diagonal lines. If the cell is located on the same ... |
Solve the programming task below in a Python markdown code block.
You are given an array $a[0 \ldots n - 1] = [a_0, a_1, \ldots, a_{n - 1}]$ of zeroes and ones only. Note that in this problem, unlike the others, the array indexes are numbered from zero, not from one.
In one step, the array $a$ is replaced by another ... |
Solve the programming task below in a Python markdown code block.
Polycarpus is sure that his life fits the description: "first there is a white stripe, then a black one, then a white one again". So, Polycarpus is sure that this rule is going to fulfill during the next n days. Polycarpus knows that he is in for w good... |
Solve the programming task below in a Python markdown code block.
A and B are preparing themselves for programming contests.
After several years of doing sports programming and solving many problems that require calculating all sorts of abstract objects, A and B also developed rather peculiar tastes.
A likes lowerca... |
Solve the programming task below in a Python markdown code block.
Arkady wants to water his only flower. Unfortunately, he has a very poor watering system that was designed for $n$ flowers and so it looks like a pipe with $n$ holes. Arkady can only use the water that flows from the first hole.
Arkady can block some o... |
Solve the programming task below in a Python markdown code block.
Berland year consists of $m$ months with $d$ days each. Months are numbered from $1$ to $m$. Berland week consists of $w$ days. The first day of the year is also the first day of the week. Note that the last week of the year might be shorter than $w$ da... |
Solve the programming task below in a Python markdown code block.
Arkady's morning seemed to be straight of his nightmare. He overslept through the whole morning and, still half-asleep, got into the tram that arrived the first. Some time after, leaving the tram, he realized that he was not sure about the line number o... |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.