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Coding
codecontest
Write Python code to solve the task. Some time ago Mister B detected a strange signal from the space, which he started to study. After some transformation the signal turned out to be a permutation p of length n or its cyclic shift. For the further investigation Mister B need some basis, that's why he decided to choose...
Step 1: To find the minimum possible deviation, we need to calculate the deviation for each cyclic shift of the given permutation. Step 2: We can then find the minimum deviation and the id of the shift that corresponds to it. Step 3: To calculate the deviation for each shift, we need to compare the elements at each ...
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Coding
codecontest
Write Python code to solve the task. Let's play the game using a bag containing several cards with integers written on it. In each game, participants first declare one of their favorite number n. Then, take out an appropriate number of cards from the bag at a time, and if the sum of the numbers written on those cards i...
Step 1: To solve this problem, we need to generate all possible combinations of the cards and find the total combinations that would give the sum equal to the number declared by the participants. Step 2: We can create a recursive function to generate all combinations of cards and find the sum of each combination. Ste...
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Coding
codecontest
Write Python code to solve the task. Let's play the game using a bag containing several cards with integers written on it. In each game, participants first declare one of their favorite number n. Then, take out an appropriate number of cards from the bag at a time, and if the sum of the numbers written on those cards i...
Step 1: In this problem, we need to find the number of combinations of cards that result in a sum equal to the declared number n. Step 2: We can achieve this by using recursion to calculate all possible combinations of cards and sum them to check if they equal n. Step 3: We need to create a recursive function to cal...
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Coding
codecontest
Write Python code to solve the task. ZS the Coder and Chris the Baboon are travelling to Udayland! To get there, they have to get on the special IOI bus. The IOI bus has n rows of seats. There are 4 seats in each row, and the seats are separated into pairs by a walkway. When ZS and Chris came, some places in the bus wa...
Step 1: We need to find a pair of neighboring empty seats for ZS and Chris in the configuration of the bus. Step 2: We can iterate through each row and check if there are neighboring empty seats available. Step 3: If we find such a pair, we should mark those seats with '+' and output the updated bus configuration. S...
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Coding
codecontest
Write Python code to solve the task. ZS the Coder and Chris the Baboon are travelling to Udayland! To get there, they have to get on the special IOI bus. The IOI bus has n rows of seats. There are 4 seats in each row, and the seats are separated into pairs by a walkway. When ZS and Chris came, some places in the bus wa...
Step 1: We need to find a way to check each row for two adjacent empty seats Step 2: We should consider the formatting of the input and how to handle the input Step 3: We can start by creating a function to find the empty pair of seats in a given row Step 4: Then we can iterate through each row and check for the pr...
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Coding
codecontest
Write Python code to solve the task. Vasya has got n books, numbered from 1 to n, arranged in a stack. The topmost book has number a_1, the next one β€” a_2, and so on. The book at the bottom of the stack has number a_n. All numbers are distinct. Vasya wants to move all the books to his backpack in n steps. During i-th ...
Step 1: We need to keep track of the position of each book in the stack and the order in which Vasya wants to move the books to his backpack. Step 2: We can start by creating a function to move the books from the stack to the backpack based on a given step. Step 3: Then we can iterate through the steps and move the ...
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Coding
codecontest
Write Python code to solve the task. Vasya has got n books, numbered from 1 to n, arranged in a stack. The topmost book has number a_1, the next one β€” a_2, and so on. The book at the bottom of the stack has number a_n. All numbers are distinct. Vasya wants to move all the books to his backpack in n steps. During i-th ...
Step 1: We need to keep track of the position of each book in the stack and determine how many books Vasya will move to his backpack during each step. Step 2: We can start by creating a function to simulate the movement of books based on Vasya's steps. Step 3: We also need to consider the logic for identifying the n...
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ec8b683ef39cdc2a1cbc205665acb1dd4a5527f119b7780e5c2b2c34fba100a9
Coding
codecontest
Write Python code to solve the task. Famil Door wants to celebrate his birthday with his friends from Far Far Away. He has n friends and each of them can come to the party in a specific range of days of the year from ai to bi. Of course, Famil Door wants to have as many friends celebrating together with him as possible...
Step 1: We need to find the maximum number of friends that can attend the party together such that there are an equal number of male and female friends. Step 2: We can start by parsing the input and storing the availability of each friend based on their gender. Step 3: Then we can iterate through each day of the yea...
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Coding
codecontest
Write Python code to solve the task. Famil Door wants to celebrate his birthday with his friends from Far Far Away. He has n friends and each of them can come to the party in a specific range of days of the year from ai to bi. Of course, Famil Door wants to have as many friends celebrating together with him as possible...
Step 1: We need to find the maximum number of friends that can attend the party at the same time. Step 2: We can start by sorting the friends based on their available days. Step 3: Then we can iterate through the available days and find the maximum number of friends that can attend. Step 4: We should keep track of ...
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Coding
codecontest
Write Python code to solve the task. Vasya has the square chessboard of size n Γ— n and m rooks. Initially the chessboard is empty. Vasya will consequently put the rooks on the board one after another. The cell of the field is under rook's attack, if there is at least one rook located in the same row or in the same col...
Step 1: To solve this problem, we can keep track of the rows and columns that have a rook placed on them. Step 2: To determine the cells not under attack, we can calculate the total number of cells and subtract the number of cells under attack. Step 3: We can use a set to keep track of the rows and the columns with ...
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Coding
codecontest
Write Python code to solve the task. Vasya has the square chessboard of size n Γ— n and m rooks. Initially the chessboard is empty. Vasya will consequently put the rooks on the board one after another. The cell of the field is under rook's attack, if there is at least one rook located in the same row or in the same col...
Step 1: We need to keep track of the cells that are not under attack as rooks are added to the chessboard. Step 2: We can maintain two sets to keep track of the rows and columns that are occupied by rooks. Step 3: As rooks are added, we can update the sets and calculate the cells that are not under attack. Step 4: ...
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Coding
codecontest
Write Python code to solve the task. Hongcow likes solving puzzles. One day, Hongcow finds two identical puzzle pieces, with the instructions "make a rectangle" next to them. The pieces can be described by an n by m grid of characters, where the character 'X' denotes a part of the puzzle and '.' denotes an empty part ...
Step 1: We need to determine if it is possible to make a rectangle from two identical copies of the given puzzle piece. Step 2: We can start by finding the boundaries of the piece and then determining if we can place the piece in such a way to form a rectangle. Step 3: We should also consider if it's possible to ove...
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Coding
codecontest
Write Python code to solve the task. Hongcow likes solving puzzles. One day, Hongcow finds two identical puzzle pieces, with the instructions "make a rectangle" next to them. The pieces can be described by an n by m grid of characters, where the character 'X' denotes a part of the puzzle and '.' denotes an empty part ...
Step 1: To solve this problem, we need to check if the given puzzle piece can form a rectangle when combined with another identical copy. Step 2: We need to consider the dimensions of the puzzle piece and how it can form a rectangle when combined with another piece. Step 3: We should also take into account the posit...
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Coding
codecontest
Write Python code to solve the task. You are given integers N,\ A and B. Determine if there exists a permutation (P_0,\ P_1,\ ...\ P_{2^N-1}) of (0,\ 1,\ ...\ 2^N-1) that satisfies all of the following conditions, and create one such permutation if it exists. * P_0=A * P_{2^N-1}=B * For all 0 \leq i < 2^N-1, the binar...
Step 1: To solve this problem, we need to find a permutation of (0, 1, ..., 2^N-1) such that each adjacent pair in the permutation differs by exactly one bit. Step 2: We can start by checking if it is possible to find such a permutation for the given inputs A, B, and N. Step 3: If it is possible, we need to find suc...
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Coding
codecontest
Write Python code to solve the task. You are given integers N,\ A and B. Determine if there exists a permutation (P_0,\ P_1,\ ...\ P_{2^N-1}) of (0,\ 1,\ ...\ 2^N-1) that satisfies all of the following conditions, and create one such permutation if it exists. * P_0=A * P_{2^N-1}=B * For all 0 \leq i < 2^N-1, the binar...
Step 1: To solve this problem, we need to find a permutation that satisfies the given conditions. Step 2: We can start by checking if such a permutation exists by verifying the conditions. Step 3: If a permutation exists, we also need to generate one such permutation. Step 4: We can use backtracking or recursive ap...
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Coding
codecontest
Write Python code to solve the task. Sereja showed an interesting game to his friends. The game goes like that. Initially, there is a table with an empty cup and n water mugs on it. Then all players take turns to move. During a move, a player takes a non-empty mug of water and pours all water from it into the cup. If t...
Step 1: We need to determine if Sereja's friends can play the game in such a way that nobody loses. Step 2: We can start by sorting the mugs in non-increasing order, so that the largest mugs are used first to fill the cup. Step 3: Then we can calculate the sum of all mugs except for the largest one, and compare it t...
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Coding
codecontest
Write Python code to solve the task. Sereja showed an interesting game to his friends. The game goes like that. Initially, there is a table with an empty cup and n water mugs on it. Then all players take turns to move. During a move, a player takes a non-empty mug of water and pours all water from it into the cup. If t...
Step 1: The game is about pouring water from mugs into a cup without overflowing the cup. Step 2: We can think of the mug with the largest volume as a limiting factor, as it can potentially cause the cup to overflow. Step 3: We should determine if the sum of the volumes of all mugs except the one with the largest vo...
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68d091c7615c9989e7f1b937657a9c886a1ced54b76d0423d57d7d68914e4c5f
Coding
codecontest
Write Python code to solve the task. Okabe needs to renovate the Future Gadget Laboratory after he tried doing some crazy experiments! The lab is represented as an n by n square grid of integers. A good lab is defined as a lab in which every number not equal to 1 can be expressed as the sum of a number in the same row ...
Step 1: We need to check whether each number in the grid (other than 1) can be expressed as the sum of a number in the same row and a number in the same column. Step 2: We can start by iterating through each number in the grid and checking if it can be represented as the sum of numbers in the same row and column. Ste...
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28c173ac01e0fc2618eee479ef0ec2631cb9e75dd13437a06bd7b426897177ad
Coding
codecontest
Write Python code to solve the task. Okabe needs to renovate the Future Gadget Laboratory after he tried doing some crazy experiments! The lab is represented as an n by n square grid of integers. A good lab is defined as a lab in which every number not equal to 1 can be expressed as the sum of a number in the same row ...
Step 1: To determine if a given lab is good, we need to check if every number not equal to 1 can be expressed as the sum of a number in the same row and a number in the same column. Step 2: We can create a function to iterate through each cell in the grid and check if the condition is met for each non-1 number. Step ...
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28c173ac01e0fc2618eee479ef0ec2631cb9e75dd13437a06bd7b426897177ad
Coding
codecontest
Write Python code to solve the task. You have a string A = A_1 A_2 ... A_n consisting of lowercase English letters. You can choose any two indices i and j such that 1 \leq i \leq j \leq n and reverse substring A_i A_{i+1} ... A_j. You can perform this operation at most once. How many different strings can you obtain...
Step 1: We need to find the number of different strings we can obtain by reversing any substring in the input string at most once. Step 2: We can iterate through all possible substrings and check how many unique strings can be obtained by reversing each substring at most once. Step 3: We should also account for edge...
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c3878fcfa1e3b7064c0180b7b1a9d7c76897d69fbe3ee4220770813a49095bc8
Coding
codecontest
Write Python code to solve the task. You have a string A = A_1 A_2 ... A_n consisting of lowercase English letters. You can choose any two indices i and j such that 1 \leq i \leq j \leq n and reverse substring A_i A_{i+1} ... A_j. You can perform this operation at most once. How many different strings can you obtain...
Step 1: We need to find the number of different strings that can be obtained by reversing any substring in the input string at most once. Step 2: We can start by considering all possible substrings that can be reversed and counting the distinct strings obtained after the reversal. Step 3: We should also consider the...
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c3878fcfa1e3b7064c0180b7b1a9d7c76897d69fbe3ee4220770813a49095bc8
Coding
codecontest
Write Python code to solve the task. Problem Statement Little Elephant from Zoo of Lviv likes bamboo very much. He currently has n stems of bamboo, Hi - height of i-th stem of bamboo (0-based numeration). Today inspector Andrii from World Bamboo Association is visiting the plantation. He doesn't like current situatio...
Step 1: We need to find the minimal number of bottles of substance required to change the current plantation to the one that the inspector wants. Step 2: We can achieve this by iterating through each stem of bamboo and calculating the difference between the current height and the desired height. Step 3: We can then ...
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9fb7c4884320bfd009322e1e0c79c9adce354b10751e749933937dccc8d922f4
Coding
codecontest
Write Python code to solve the task. Problem Statement Little Elephant from Zoo of Lviv likes bamboo very much. He currently has n stems of bamboo, Hi - height of i-th stem of bamboo (0-based numeration). Today inspector Andrii from World Bamboo Association is visiting the plantation. He doesn't like current situatio...
Step 1: We need to calculate the minimum number of bottles required to change the height of the bamboo stems to the desired heights. Step 2: We can start by iterating through each stem of bamboo and calculating the difference between the current height and the desired height. Step 3: If the difference is negative, i...
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9fb7c4884320bfd009322e1e0c79c9adce354b10751e749933937dccc8d922f4
Coding
codecontest
Write Python code to solve the task. Your friend who lives in undisclosed country is involved in debt. He is borrowing 100,000-yen from a loan shark. The loan shark adds 5% interest of the debt and rounds it to the nearest 1,000 above week by week. Write a program which computes the amount of the debt in n weeks. I...
Step 1: We need to calculate the amount of debt in n weeks, with 5% interest added each week. Step 2: We can start by writing a function to calculate the new amount of debt after adding the interest and rounding to the nearest 1,000. Step 3: Then we can iterate through each week and update the amount of debt accordi...
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66acf578a0b7caf4948561fb79341b738f8b944b93e28890b5f8174a366e22be
Coding
codecontest
Write Python code to solve the task. Your friend who lives in undisclosed country is involved in debt. He is borrowing 100,000-yen from a loan shark. The loan shark adds 5% interest of the debt and rounds it to the nearest 1,000 above week by week. Write a program which computes the amount of the debt in n weeks. I...
Step 1: We need to calculate the amount of the debt after n weeks, with a 5% weekly interest added and rounded to the nearest 1000. Step 2: We can start by creating a function to calculate the amount of debt after one week. Step 3: Then we can iterate through the weeks and apply the weekly interest to the previous a...
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66acf578a0b7caf4948561fb79341b738f8b944b93e28890b5f8174a366e22be
Coding
codecontest
Write Python code to solve the task. 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, 0 < x_1 < x_2 < ... < x_{N} \...
Step 1: The given problem involves finding the minimum amount of energy required for a robot to put all the pieces of trash in a trash bin. Step 2: We can start by understanding the structure of the input and the constraints. We also need to understand the logic behind the calculation of energy consumption for differ...
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9304c5edec8bdb756a28abb4805143e90a3516a0413e463f9edc5ddc305f62e8
Coding
codecontest
Write Python code to solve the task. 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, 0 < x_1 < x_2 < ... < x_{N} \...
Step 1: To solve this problem, we need to minimize the amount of energy required to put all the pieces of trash in the trash bin. Step 2: We need to consider the distance between the positions of the pieces of trash and the position of the trash bin. Step 3: We also need to take into account the amount of energy con...
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9304c5edec8bdb756a28abb4805143e90a3516a0413e463f9edc5ddc305f62e8
Coding
codecontest
Write Python code to solve the task. For months Maxim has been coming to work on his favorite bicycle. And quite recently he decided that he is ready to take part in a cyclists' competitions. He knows that this year n competitions will take place. During the i-th competition the participant must as quickly as possible...
Step 1: The problem involves calculating the minimum time measured by the time counter for participating in cycling competitions. Step 2: The time counter records the time it takes for the cyclist to complete a ride from the start point to the finish point. Step 3: The time depends on the cyclist's choice of the ini...
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efdf44090dbbe668c5dee09e4b9ce8577a2663c09f43c4a6ac981d1fa6b0d537
Coding
codecontest
Write Python code to solve the task. For months Maxim has been coming to work on his favorite bicycle. And quite recently he decided that he is ready to take part in a cyclists' competitions. He knows that this year n competitions will take place. During the i-th competition the participant must as quickly as possible...
Step 1: The function g(t) in the solution might indicate the function representing the movement of the sensor on the bike's wheel. Step 2: The solve function seems to be using bisection method for root finding. It might be required to understand its relevance to the bike's movement. Step 3: The bestTime function cal...
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efdf44090dbbe668c5dee09e4b9ce8577a2663c09f43c4a6ac981d1fa6b0d537
Coding
codecontest
Write Python code to solve the task. You will be given a set of distinct numbers. Your task is to find that even length subset which will give you a maximum value of P % (10^9 + 7). This value of P for a subset of length N is defined as below : P = (product of N/2 maximum values) / (product of N/2 minimum va...
Step 1: This problem requires finding the even-length subset (of distinct numbers) that yields the maximum value of P, which must be taken modulo (10^9 + 7). Step 2: To solve this problem, we need to determine the product of N/2 maximum values and the product of N/2 minimum values for every even-length subset of a gi...
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160cc98be9a2d5ab8ddaa5c402741a41f1c3ac0724eb96f834423a4e616cce07
Coding
codecontest
Write Python code to solve the task. You will be given a set of distinct numbers. Your task is to find that even length subset which will give you a maximum value of P % (10^9 + 7). This value of P for a subset of length N is defined as below : P = (product of N/2 maximum values) / (product of N/2 minimum va...
Step 1: The problem requires finding the greatest integer P, derived from the product of N/2 maximum values and N/2 minimum values in a subset. Step 2: The problem logic should include finding all subsets of the given set, filtering even length subsets, and computing maximum and minimum products values. Step 3: We n...
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160cc98be9a2d5ab8ddaa5c402741a41f1c3ac0724eb96f834423a4e616cce07
Coding
codecontest
Write Python code to solve the task. You are given an integer array of length n. You have to choose some subsequence of this array of maximum length such that this subsequence forms a increasing sequence of consecutive integers. In other words the required sequence should be equal to [x, x + 1, ..., x + k - 1] for som...
Step 1: The problem is asking to find the maximum length subsequence of the given array that forms an increasing sequence of consecutive integers and output the length of the subsequence and the sequence of indices of the subsequence. Step 2: To solve this problem, we can use dynamic programming to keep track of the ...
b018325fa6db1212dfc77a29e935eb4049911f64a164d642f5758d05f36c6c35_1_1
e98d39bbb3c5beec454f0e225a47d7a08a860f3b7c4e951fdea6f61ae316e9a6
Coding
codecontest
Write Python code to solve the task. You are given an integer array of length n. You have to choose some subsequence of this array of maximum length such that this subsequence forms a increasing sequence of consecutive integers. In other words the required sequence should be equal to [x, x + 1, ..., x + k - 1] for som...
Step 1: The problem asks for the maximum length of a subsequence of the given array that forms an increasing sequence of consecutive integers and the sequence of indices of the maximum length subsequence. Step 2: We can use dynamic programming to solve this problem efficiently. Step 3: We need to iterate through the...
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e98d39bbb3c5beec454f0e225a47d7a08a860f3b7c4e951fdea6f61ae316e9a6
Coding
codecontest
Write Python code to solve the task. The cake shop made a lot of roll cakes of various sizes. You have been tasked with arranging this cake in a box. The roll cake is so soft that it will collapse if another roll cake is on top. Therefore, as shown in Fig. (A), all roll cakes must be arranged so that they touch the bo...
Step 1: The problem involves sorting and arranging the roll cakes in a box such that they fit well without collapsing. Step 2: We need to determine the order of arrangement and check if the roll cakes fit well within the box. Step 3: The solution seems to involve sorting the roll cake sizes and then devising the or...
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Coding
codecontest
Write Python code to solve the task. The cake shop made a lot of roll cakes of various sizes. You have been tasked with arranging this cake in a box. The roll cake is so soft that it will collapse if another roll cake is on top. Therefore, as shown in Fig. (A), all roll cakes must be arranged so that they touch the bo...
Step 1: The problem requires us to arrange the roll cakes in a box such that they fit without collapsing. Step 2: We need to find the order of arrangement of the roll cakes and ensure that they touch the bottom of the box. Step 3: The objective is to determine if the roll cakes fit well in the box with the given len...
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8b251ced28b0ef4d32ad0a60e63c98fa830ea0e258874f009bbac17191265728
Coding
codecontest
Write Python code to solve the task. You came to a brand-new aqua park. In this aqua park you are not sliding like in most of aqua parks, but falling. There are N objects. Each object is non-horizontal and non-vertical segment. When you fall on the segment you start sliding on it and when you reach its lowest point you...
Step 1: To solve this problem, we need to find the final X coordinate by determining the falling path and the segments intersected. Step 2: First, we need to read the initial X coordinate and the number of segment-objects. Step 3: Then, based on the segment properties, we check if the initial X coordinate intersects...
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Coding
codecontest
Write Python code to solve the task. You came to a brand-new aqua park. In this aqua park you are not sliding like in most of aqua parks, but falling. There are N objects. Each object is non-horizontal and non-vertical segment. When you fall on the segment you start sliding on it and when you reach its lowest point you...
Step 1: To find the final X coordinate of the falling object, we need to determine the segment-object that the falling object will land on based on the initial X coordinate and the segment coordinates. Step 2: By sorting the segment-objects in descending order based on their y-coordinate, we can find the segment-obje...
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c9bb07d961e6a55201f358bac4f6be11eabd0c5d40052fc910e47b46b1d3a161
Coding
codecontest
Write Python code to solve the task. 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 every contest, according to on...
Step 1: This problem involves understanding Limak's rating change over a series of contests based on his performance and division. Step 2: We'll start by processing the input to extract the ratings change and division during each contest. Step 3: Next, we'll evaluate the possible scenarios based on the given informa...
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Coding
codecontest
Write Python code to solve the task. 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 every contest, according to on...
Step 1: The problem asks to calculate the maximum possible rating Limak can have after all n contests. His rating can be arbitrarily big, impossible, or a definite value. Step 2: It requires understanding the rating division of 1900 or 1899 users. Step 3: Then, we'll iterate through the given contests, update Limak'...
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Coding
codecontest
Write Python code to solve the task. Ancient Egyptians are known to have used a large set of symbols <image> to write on the walls of the temples. Fafa and Fifa went to one of the temples and found two non-empty words S1 and S2 of equal lengths on the wall of temple written one below the other. Since this temple is ver...
Step 1: The overall task is to calculate the probability that S1 is lexicographically greater than S2, given the two non-empty words S1 and S2 of equal lengths and the size of the alphabet. Step 2: To solve this problem, we need to calculate the number of ways to fill in the erased symbols of S1 and S2 such that S1 ...
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Coding
codecontest
Write Python code to solve the task. Ancient Egyptians are known to have used a large set of symbols <image> to write on the walls of the temples. Fafa and Fifa went to one of the temples and found two non-empty words S1 and S2 of equal lengths on the wall of temple written one below the other. Since this temple is ver...
Step 1: To solve this problem, we need to write a program that calculates the probability that the first word is lexicographically greater than the second word even though some of the symbols have been erased. Step 2: We can use a brute force approach to consider all possible replacements for the erased symbols and c...
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a4b0299b0df4d1e5e7574cde52fb677a6eba277e67437799a77bfafae465c351
Coding
codecontest
Write Python code to solve the task. The russian intelligence agency KGB make an encryption technique to send their passwords. Originally the password is of 3 characters. After encryption the password is converted into 3 numbers A-B-C. Now, Sherlock wants to decrypt the password encryption technique of KGB. Sherlock k...
Step 1: To solve this problem, we need to realize that the password's characters can be represented by two possible values (K or X, G or Y, B or Z). Step 2: We can iterate through each test case and identify the possible values for each character in the password. Step 3: By considering the possible values for each c...
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5c9756d21d1f103b6afb31b4a01114e56ae186cc1341419939f61036d68afa7a
Coding
codecontest
Write Python code to solve the task. The russian intelligence agency KGB make an encryption technique to send their passwords. Originally the password is of 3 characters. After encryption the password is converted into 3 numbers A-B-C. Now, Sherlock wants to decrypt the password encryption technique of KGB. Sherlock k...
Step 1: We need to determine the original password by decrypting the encryption technique applied by the KGB. Step 2: The encryption technique seems to work by converting each number to a corresponding letter from a given set of possibilities. Step 3: We need to understand the relationship between the numbers and ...
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5c9756d21d1f103b6afb31b4a01114e56ae186cc1341419939f61036d68afa7a
Coding
codecontest
Write Python code to solve the task. 12:17 (UTC): The sample input 1 and 2 were swapped. The error is now fixed. We are very sorry for your inconvenience. There are N children in AtCoder Kindergarten, conveniently numbered 1 through N. Mr. Evi will distribute C indistinguishable candies to the children. If child i is...
Step 1: The problem asks us to find the sum over all possible ways to distribute C candies to the children given the excitement levels of the children. Step 2: We can use dynamic programming to solve this problem efficiently. Step 3: We can define a 2D memoization array to store values for each possible combination...
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c22a42b6b64657e96a0ac3404ed9401038a401ff7806d3818d78cf9abf6ec889
Coding
codecontest
Write Python code to solve the task. 12:17 (UTC): The sample input 1 and 2 were swapped. The error is now fixed. We are very sorry for your inconvenience. There are N children in AtCoder Kindergarten, conveniently numbered 1 through N. Mr. Evi will distribute C indistinguishable candies to the children. If child i is...
Step 1: We can solve this problem using dynamic programming to compute the activity level based on the excitement levels of the children. Step 2: First, we'll initialize the values for the activity levels for different excitement levels and powers using a memorization table. Step 3: Then, we'll use dynamic programmi...
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c22a42b6b64657e96a0ac3404ed9401038a401ff7806d3818d78cf9abf6ec889
Coding
codecontest
Write Python code to solve the task. There are n cities and m bidirectional roads in the country. The roads in the country form an undirected weighted graph. The graph is not guaranteed to be connected. Each road has it's own parameter w. You can travel through the roads, but the government made a new law: you can only...
Step 1: The problem requires checking if it's possible to travel from the first city to every other city, and what's the minimum amount of money needed to get from the first city to each city. Step 2: The problem is solved using Dijkstra's algorithm. Dijkstra's algorithm is used to find the shortest path between the ...
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8e3c60d5ae36a8a684bc021a4e25ade509b55216560f3bca6401f4fe244864a2
Coding
codecontest
Write Python code to solve the task. There are n cities and m bidirectional roads in the country. The roads in the country form an undirected weighted graph. The graph is not guaranteed to be connected. Each road has it's own parameter w. You can travel through the roads, but the government made a new law: you can only...
Step 1: To solve this problem, we need to find the minimum amount of money needed to travel from city 1 to every other city. Step 2: One way to solve this problem is to use Dijkstra's algorithm. The algorithm will find the shortest path from city 1 to every other city, satisfying the given conditions. Step 3: We nee...
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8e3c60d5ae36a8a684bc021a4e25ade509b55216560f3bca6401f4fe244864a2
Coding
codecontest
Write Python code to solve the task. You are the planning manager of an animation production company. What animation production companies produce these days is not limited to animation itself. Related products, such as figures of characters and character song CDs, are also important sources of revenue. How much this pr...
Step 1: The code seems to read the input and perform some processing to calculate the popularity points of characters based on their screen time. Step 2: First, the code reads input and sorts the data. Step 3: Then it populates a 2D list with the appearance time of each character. Step 4: Next, it iterates through ...
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46f4d459a5a57a449ad5ce11499789048b48f557fb1810d6453d7b440badd3b0
Coding
codecontest
Write Python code to solve the task. You are the planning manager of an animation production company. What animation production companies produce these days is not limited to animation itself. Related products, such as figures of characters and character song CDs, are also important sources of revenue. How much this pr...
Step 1: The program needs to read input data and process it to calculate the points earned by each character based on their appearance time in the anime. Step 2: We can use a 2D list to represent the appearance time of each character and calculate the points earned for each character. Step 3: Once we have the points...
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46f4d459a5a57a449ad5ce11499789048b48f557fb1810d6453d7b440badd3b0
Coding
codecontest
Write Python code to solve the task. You are given an array a consisting of n positive integers. You pick two integer numbers l and r from 1 to n, inclusive (numbers are picked randomly, equiprobably and independently). If l > r, then you swap values of l and r. You have to calculate the expected value of the number of...
Step 1: The problem requires calculating the expected value of the number of unique elements in a segment of the array from index l to index r, inclusive. Step 2: We can achieve this by iterating over all possible pairs of indices (l, r) and calculating the average number of unique elements in the segment. Step 3: W...
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7a90cd7a09dd2358245df6e0437dcfad7ce2789b0a0303e92f710283ea2eefc8
Coding
codecontest
Write Python code to solve the task. You are given an array a consisting of n positive integers. You pick two integer numbers l and r from 1 to n, inclusive (numbers are picked randomly, equiprobably and independently). If l > r, then you swap values of l and r. You have to calculate the expected value of the number of...
Step 1: The problem requires us to calculate the expected number of unique elements in a segment of an array Step 2: We can achieve this by considering each element in the array and calculating the probability of selecting it and the expected number of unique elements when it is selected Step 3: We also need to hand...
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7a90cd7a09dd2358245df6e0437dcfad7ce2789b0a0303e92f710283ea2eefc8
Coding
codecontest
Write Python code to solve the task. JAG-channel Nathan O. Davis operates an electronic bulletin board called JAG-channel. He is currently working on adding a new feature called Thread View. Like many other electronic bulletin boards, JAG-channel is thread-based. Here, a thread refers to a group of conversations cons...
Step 1: The input consists of multiple datasets, and each dataset contains the simple format display of a thread tree. Step 2: We need to process each dataset by transforming the simple format display into a formatted display that represents the logical structure of the reply/reply relationship between posts. Step 3:...
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d4cc31aec2a2442a6cd16376f1f415dc9cffc99a211db68a302b1cf394fca994
Coding
codecontest
Write Python code to solve the task. JAG-channel Nathan O. Davis operates an electronic bulletin board called JAG-channel. He is currently working on adding a new feature called Thread View. Like many other electronic bulletin boards, JAG-channel is thread-based. Here, a thread refers to a group of conversations cons...
Step 1: We need to read and process each input dataset which will contain the simple format of the thread tree. Step 2: The simple format display contains posts and their direct replies. We need to process the simple format and display it in the required format. Step 3: To achieve the required format, we need to rep...
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d4cc31aec2a2442a6cd16376f1f415dc9cffc99a211db68a302b1cf394fca994
Coding
codecontest
Write Python code to solve the task. You always wanted to be a soldier and play it out at the battleground live. When you came at Techfest 2013, you encountered Lazer Tag, a game that satiated your innate hunger for taking aim and shooting enemies. Lazer Tag consists of a group play, where you are assigned a fixed num...
Step 1: This problem involves calculating the expected score of a Lazer Tag game based on the series of hits and misses. Step 2: We are given the probability of hitting the target at each turn and need to calculate the expected score at the end of the game. Step 3: We can solve this problem by iterating through the ...
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16e58ef5e22440c0b77e9d9f85cc33a8ec0d15ff39c99a7100d2471bf6add3d5
Coding
codecontest
Write Python code to solve the task. You always wanted to be a soldier and play it out at the battleground live. When you came at Techfest 2013, you encountered Lazer Tag, a game that satiated your innate hunger for taking aim and shooting enemies. Lazer Tag consists of a group play, where you are assigned a fixed num...
Step 1: The problem requires us to calculate the expected score for a game of Lazer Tag based on the probability of hitting a target at each turn. Step 2: We can start by calculating the expected score for each turn based on the probability of a hit and the previous expected score. Step 3: We will use a dynamic prog...
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16e58ef5e22440c0b77e9d9f85cc33a8ec0d15ff39c99a7100d2471bf6add3d5
Coding
codecontest
Write Python code to solve the task. Example Input 5 3 4 2 5 Output 5 2 4 1 3
Step 1: The code takes the input values n and m, and then iterates through the input list in reverse order. Step 2: It then prints each number from the input list that hasn't been printed yet. Step 3: Finally, it prints the remaining numbers from 1 to n that haven't been printed yet. Step 4: The implementation uses...
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98788ceaedc4bbbccd4cbdec0ad3a36410fc08c274bc024bf86ef18d940efbc4
Coding
codecontest
Write Python code to solve the task. Example Input 5 3 4 2 5 Output 5 2 4 1 3
Step 1: The given code takes input from the user and then processes the input list to print the numbers in a specific order. Step 2: The code uses a flag list to keep track of the numbers that have been printed and checks if the number has already been printed before printing it. Step 3: We can optimize the code to ...
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98788ceaedc4bbbccd4cbdec0ad3a36410fc08c274bc024bf86ef18d940efbc4
Coding
codecontest
Write Python code to solve the task. 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 easternmost post town is post to...
Step 1: The problem requires us to calculate the total distance traveled during an m-day journey on the JOI Highway, given the distance between post towns and the movement method for each day. Step 2: We need to keep track of the total distance traveled and calculate the remainder after dividing it by 100000. Step 3:...
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76a4b30c14ac87377ac478de9ca5c1a77fb7846c503a6f7cf044d4aa68157612
Coding
codecontest
Write Python code to solve the task. 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 easternmost post town is post to...
Step 1: To solve this problem, we need to calculate the total distance traveled in the m-day journey. Step 2: We can start by calculating the distance between each pair of post towns and store the cumulative sum of distances. Step 3: Then, we can simulate the traveler's journey and calculate the total distance trav...
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76a4b30c14ac87377ac478de9ca5c1a77fb7846c503a6f7cf044d4aa68157612
Coding
codecontest
Write Python code to solve the task. You have a garden consisting entirely of grass and weeds. Your garden is described by an n Γ— m grid, with rows numbered 1 to n from top to bottom, and columns 1 to m from left to right. Each cell is identified by a pair (r, c) which means that the cell is located at row r and column...
Step 1: To solve this problem, we need to efficiently mow all the weeds by moving the lawnmower through the garden. Step 2: We can start by parsing the input to get the dimensions of the garden and the content of each cell. We'll store the content in a 2D list. Step 3: We then need to consider the logic of moving th...
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c57b728713a1f3943c4fdf11b88453ec132280e3d2b0709ab508bdfb830198ea
Coding
codecontest
Write Python code to solve the task. You have a garden consisting entirely of grass and weeds. Your garden is described by an n Γ— m grid, with rows numbered 1 to n from top to bottom, and columns 1 to m from left to right. Each cell is identified by a pair (r, c) which means that the cell is located at row r and column...
Step 1: To solve this problem, we need to determine the minimum number of moves required to mow all the weeds in the garden. We can start by parsing the input values and reading the configuration of the grid. We will then determine the locations of the first and last occurrence of weeds in each row, keeping track of w...
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c57b728713a1f3943c4fdf11b88453ec132280e3d2b0709ab508bdfb830198ea
Coding
codecontest
Write Python code to solve the task. Robert Frost is standing on a cross-way with six roads diverging out. He decides to choose the road not taken. After travelling the pathway he reaches a similar but yet another cross-way with six another roads diverging out. He keeps on travelling like this from one cross-way to ano...
Step 1: To solve this problem, we need to understand the pattern of the distinct paths that Robert Frost can follow as he travels from cross-way to cross-way. Step 2: We can start by identifying the relationship between the number of roads travelled and the number of distinct paths. We can then use this relationship ...
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568a0c7e513280cc8d3a3b1b8ab95442dc1c1e6dcfcc7d5fd41c11644b894fd0
Coding
codecontest
Write Python code to solve the task. Robert Frost is standing on a cross-way with six roads diverging out. He decides to choose the road not taken. After travelling the pathway he reaches a similar but yet another cross-way with six another roads diverging out. He keeps on travelling like this from one cross-way to ano...
Step 1: To solve this problem, we need to understand the pattern of the distinct paths as Robert Frost travels from one cross-way to another. Step 2: It seems like there is a mathematical pattern or sequence that gives the number of distinct paths for a given number of roads traveled. Step 3: We need to find this pa...
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568a0c7e513280cc8d3a3b1b8ab95442dc1c1e6dcfcc7d5fd41c11644b894fd0
Coding
codecontest
Write Python code to solve the task. Consider a sequence of non- negative integers b(1), b(2) … , b(n) of length n. The given sequence is called a winning sequence if and only if there exists integers p and q between 1 and n (both inclusive) such that a(p) xor a(p+1) xor a(p+2) …. xor a(q) = 0. The xor operation is the...
Step 1: To solve this problem, we need to calculate the number of sequences that are not winning sequences based on the given conditions. Step 2: We can start by understanding the constraints and the input values, n and k. Step 3: Then, we can use the values of n and k to calculate the number of non-winning sequence...
3f8cbb3e73d79f068ec194675bb043f4ecc326cd3da12abbff8e04cdaaf06087_1_1
0c002d5c698432802528e0110707f6333c169f19b5f6c42546fb60d98418e6e1
Coding
codecontest
Write Python code to solve the task. Consider a sequence of non- negative integers b(1), b(2) … , b(n) of length n. The given sequence is called a winning sequence if and only if there exists integers p and q between 1 and n (both inclusive) such that a(p) xor a(p+1) xor a(p+2) …. xor a(q) = 0. The xor operation is the...
Step 1: To solve this problem, we need to find the number of sequences of length n that are not winning sequences using the given constraints. Step 2: We will need to compute the number of sequences made of n integers that do not satisfy the winning sequence condition. Step 3: We can iterate through all possible seq...
297f2832440b4bb93c2b89488019a0ecc2e463ffa88d9053207b0d88e28bc063_1_1
0c002d5c698432802528e0110707f6333c169f19b5f6c42546fb60d98418e6e1
Coding
codecontest
Write Python code to solve the task. Since you are the best Wraith King, Nizhniy Magazin Β«MirΒ» at the centre of Vinnytsia is offering you a discount. You are given an array a of length n and an integer c. The value of some array b of length k is the sum of its elements except for the <image> smallest. For example, t...
Step 1: The problem requires finding the smallest possible sum of values of contiguous subarrays. To solve this, we can use dynamic programming and create the optimal partition to minimize the sum of values of the subarrays. We can optimize the solution using sparse table (also known as RMQ table - Range Minimum Quer...
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7b7e882450e1d17c60e43ba5b4c90226d5264111124a3f0c70aad172467f22d2
Coding
codecontest
Write Python code to solve the task. Since you are the best Wraith King, Nizhniy Magazin Β«MirΒ» at the centre of Vinnytsia is offering you a discount. You are given an array a of length n and an integer c. The value of some array b of length k is the sum of its elements except for the <image> smallest. For example, t...
Step 1: The problem requires finding the smallest possible sum of the values of subarrays of a partition of the given array. The input contains an array of integers, the length of the array, and an integer c. The value of array b is the sum of its elements except for the c smallest. To find all possible partitions ...
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7b7e882450e1d17c60e43ba5b4c90226d5264111124a3f0c70aad172467f22d2
Coding
codecontest
Write Python code to solve the task. You are given n points on the plane. The polygon formed from all the n points is strictly convex, that is, the polygon is convex, and there are no three collinear points (i.e. lying in the same straight line). The points are numbered from 1 to n, in clockwise order. We define the d...
Step 1: The goal is to compute f(k) for k = 3 to n, where the f(k) represents the maximum perimeter of a convex polygon formed by any possible k vertices from the given set of points. Step 2: To compute the maximum perimeter, we can calculate the Manhattan distance between each vertex and the point farthest from it i...
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Coding
codecontest
Write Python code to solve the task. You are given n points on the plane. The polygon formed from all the n points is strictly convex, that is, the polygon is convex, and there are no three collinear points (i.e. lying in the same straight line). The points are numbered from 1 to n, in clockwise order. We define the d...
Step 1: The problem is about calculating the perimeter of different k-vertex polygons formed by the given points. Step 2: We are given points with their coordinates and the number of points n. Step 3: We want to find the maximal perimeter of the k-vertex polygons, for each k from 3 to n. Step 4: We have to consider...
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Coding
codecontest
Write Python code to solve the task. This is the second subtask of problem F. The only differences between this and the first subtask are the constraints on the value of m and the time limit. It is sufficient to solve this subtask in order to hack it, but you need to solve both subtasks in order to hack the first one. ...
Step 1: The problem requires counting the number of different pairs of sequences {a_i}_{i=1}^n, {b_i}_{i=1}^n that result in this configuration. Since the number of pairs can be large, it needs to be output modulo 998244353. Step 2: We can start by reading the input and preprocessing the color segment data to make it...
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Coding
codecontest
Write Python code to solve the task. This is the second subtask of problem F. The only differences between this and the first subtask are the constraints on the value of m and the time limit. It is sufficient to solve this subtask in order to hack it, but you need to solve both subtasks in order to hack the first one. ...
Step 1: The task is to count the number of different pairs of sequences {a_i}_{i=1}^n, {b_i}_{i=1}^n, given a set of conditions, and output the count modulo 998244353. Step 2: The first step is to read the input values and create a data structure to store relevant information. Step 3: Then, dynamic programming can b...
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Coding
codecontest
Write Python code to solve the task. Stick n circular stickers with a radius of 1 on a square origami paper with a side length of 10. The stickers can be stacked. Create a program that reads the coordinates of the position where the stickers are to be attached and outputs the number of stickers at the place where the s...
Step 1: The program appears to check for the number of overlapping stickers on the origami paper at the point where the stickers overlap the most. Step 2: The program uses complex numbers to represent the coordinates of the stickers on the origami paper. Step 3: It then computes the distance between the centers of t...
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Coding
codecontest
Write Python code to solve the task. Stick n circular stickers with a radius of 1 on a square origami paper with a side length of 10. The stickers can be stacked. Create a program that reads the coordinates of the position where the stickers are to be attached and outputs the number of stickers at the place where the s...
Step 1: The program seems to implement an algorithm to find the number of stickers that overlap the most on the origami paper. Step 2: It uses a loop to process multiple input datasets, and for each dataset, it calculates the overlapping stickers and outputs the maximum number of overlapped stickers. Step 3: The pr...
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Coding
codecontest
Write Python code to solve the task. Jeel and Ashish play a game on an n Γ— m matrix. The rows are numbered 1 to n from top to bottom and the columns are numbered 1 to m from left to right. They play turn by turn. Ashish goes first. Initially, each cell of the matrix contains a non-negative integer. Each turn, a player...
Step 1: The problem requires us to determine the winner of a game based on a given matrix and the moves of each player. Step 2: The game consists of choosing a starting and finishing cell, decreasing the value of the starting cell, and then updating the values of cells on the shortest path between the two cells based...
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Coding
codecontest
Write Python code to solve the task. Jeel and Ashish play a game on an n Γ— m matrix. The rows are numbered 1 to n from top to bottom and the columns are numbered 1 to m from left to right. They play turn by turn. Ashish goes first. Initially, each cell of the matrix contains a non-negative integer. Each turn, a player...
Step 1: The problem requires determining who will win the game based on the given matrix and the initial states of the cells. Step 2: The optimal strategy of the players must be considered to determine the winner. Step 3: We should understand how the strategies of the players change the values of the cells, and how...
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Coding
codecontest
Write Python code to solve the task. Vasya has gotten interested in programming contests in TCMCF+++ rules. On the contest n problems were suggested and every problem had a cost β€” a certain integral number of points (perhaps, negative or even equal to zero). According to TCMCF+++ rules, only accepted problems can earn ...
Step 1: The problem requires finding the problems Vasya needs to solve to get the maximal possible number of points. Step 2: To accomplish this, we could sort the task costs and then traverse the sorted list to create the desired output sequence. Step 3: We should handle negative costs separately and print one or tw...
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Coding
codecontest
Write Python code to solve the task. Vasya has gotten interested in programming contests in TCMCF+++ rules. On the contest n problems were suggested and every problem had a cost β€” a certain integral number of points (perhaps, negative or even equal to zero). According to TCMCF+++ rules, only accepted problems can earn ...
Step 1: The problem requires identifying the set of problems that maximizes the overall number of points. This means we need to find the most optimal solution in terms of maximizing the product of the costs. Step 2: The solution involves handling various scenarios, such as negative values and zero cost problems, and ...
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Coding
codecontest
Write Python code to solve the task. Vanya wants to minimize a tree. He can perform the following operation multiple times: choose a vertex v, and two disjoint (except for v) paths of equal length a0 = v, a1, ..., ak, and b0 = v, b1, ..., bk. Additionally, vertices a1, ..., ak, b1, ..., bk must not have any neighbours ...
Step 1: We need to understand the problem, which involves checking the structure of a tree and determining if it can be converted into a path using a sequence of operations. Step 2: One way to approach this is to implement a graph traversal algorithm to explore the tree structure and check if the given operations can...
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Coding
codecontest
Write Python code to solve the task. Vanya wants to minimize a tree. He can perform the following operation multiple times: choose a vertex v, and two disjoint (except for v) paths of equal length a0 = v, a1, ..., ak, and b0 = v, b1, ..., bk. Additionally, vertices a1, ..., ak, b1, ..., bk must not have any neighbours ...
Step 1: To solve this problem, we need to create a graph and implement a depth-first search (DFS) to determine if it is possible to minimize the tree into a path. Step 2: We can start by defining a class to represent the nodes of the graph. This class should include attributes to store the index, neighbors, parent, ...
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Coding
codecontest
Write Python code to solve the task. There is a programming language in which every program is a non-empty sequence of "<" and ">" signs and digits. Let's explain how the interpreter of this programming language works. A program is interpreted using movement of instruction pointer (IP) which consists of two parts. *...
Step 1: This problem requires processing a sequence of characters according to specific rules and then answering a set of queries based on the resulting output. We need to read the input sequence and determine the number of times each digit is printed when running the corresponding program. To achieve this, we can it...
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Coding
codecontest
Write Python code to solve the task. There is a programming language in which every program is a non-empty sequence of "<" and ">" signs and digits. Let's explain how the interpreter of this programming language works. A program is interpreted using movement of instruction pointer (IP) which consists of two parts. *...
Step 1: The problem is to simulate the tape programming language to determine the number of times a digit will be printed during the program execution. Step 2: We need to write a function to solve the query by simulating the execution of each program. Step 3: The function should iterate through the program, updating...
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5e7ba7a00cbed11e8ed4edc397baf03261197022af96ad6456fb34c769a19aae
Coding
codecontest
Write Python code to solve the task. Vasya has found a piece of paper with a coordinate system written on it. There are n distinct squares drawn in this coordinate system. Let's number the squares with integers from 1 to n. It turned out that points with coordinates (0, 0) and (ai, ai) are the opposite corners of the i...
Step 1: The problem asks us to find a point in a coordinate system that belongs to exactly k drawn squares. Step 2: We need to determine how many squares a point belongs to based on its coordinates. Step 3: To solve the problem, we can use the given set of squares to determine the possible coordinates for the point ...
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Coding
codecontest
Write Python code to solve the task. Vasya has found a piece of paper with a coordinate system written on it. There are n distinct squares drawn in this coordinate system. Let's number the squares with integers from 1 to n. It turned out that points with coordinates (0, 0) and (ai, ai) are the opposite corners of the i...
Step 1: To solve this problem, we need to find a point in the coordinate system that belongs to exactly k drawn squares. Step 2: We can start by sorting the given squares based on the coordinates of their opposite corners. Step 3: Then we can check if the number of squares is less than k. If it is, there is no valid...
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Coding
codecontest
Write Python code to solve the task. Berland scientists face a very important task - given the parts of short DNA fragments, restore the dinosaur DNA! The genome of a berland dinosaur has noting in common with the genome that we've used to: it can have 26 distinct nucleotide types, a nucleotide of each type can occur a...
Step 1: The goal is to restore the dinosaur DNA by finding the shortest string that contains all given fragments as substrings. Step 2: To achieve this, we can use a graph representation to represent the fragments and then traverse the graph to find the shortest string that contains all fragments as substrings. Step ...
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Coding
codecontest
Write Python code to solve the task. Berland scientists face a very important task - given the parts of short DNA fragments, restore the dinosaur DNA! The genome of a berland dinosaur has noting in common with the genome that we've used to: it can have 26 distinct nucleotide types, a nucleotide of each type can occur a...
Step 1: The given code is solving a problem to restore the dinosaur DNA genome with constraints and requirements. Step 2: The code uses lists and loops to process the genome fragments to find the minimum length string that contains all the given parts. Step 3: We can start by understanding the input and processing i...
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Coding
codecontest
Write Python code to solve the task. Let s be some string consisting of symbols "0" or "1". Let's call a string t a substring of string s, if there exists such number 1 ≀ l ≀ |s| - |t| + 1 that t = s_l s_{l+1} … s_{l + |t| - 1}. Let's call a substring t of string s unique, if there exist only one such l. For example,...
Step 1: To solve this problem, we can start by understanding that the minimal unique substring of the string will have the same pattern of 0s and 1s, with the rest of the string comprising the opposite character. Step 2: We can then work on generating such a string such that the minimal unique substring has the lengt...
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Coding
codecontest
Write Python code to solve the task. Let s be some string consisting of symbols "0" or "1". Let's call a string t a substring of string s, if there exists such number 1 ≀ l ≀ |s| - |t| + 1 that t = s_l s_{l+1} … s_{l + |t| - 1}. Let's call a substring t of string s unique, if there exist only one such l. For example,...
Step 1: To solve this problem, we need to find a string s consisting of n symbols "0" or "1", such that the length of its minimal unique substring is equal to k. Step 2: We can start by understanding the properties of unique substrings in a given string. Step 3: Then, we can follow the solution provided to generate ...
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d976a5116b96d65d3c60513454d9476539a0863ad83aa1e0291b96ee882d9735
Coding
codecontest
Write Python code to solve the task. This task is very simple.You are given two string A and B and you have to find how many times you can form string B from string A. You are only allow to delete some character from string A and Change postion of characters .You are not allow to use same index character of A two times...
Step 1: To solve this problem, we need to find the number of times string B can be formed from string A. Step 2: We can start by counting the occurrences of each character in string A using a Counter. Step 3: Then, for each character in string B, we can multiply the count of that character in A by the current count ...
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1f1b326cecce75915149cd42f290616aea2436cb70c3a995b4c2a72325e97a21
Coding
codecontest
Write Python code to solve the task. This task is very simple.You are given two string A and B and you have to find how many times you can form string B from string A. You are only allow to delete some character from string A and Change postion of characters .You are not allow to use same index character of A two times...
Step 1: To solve this problem, we need to find the number of times string B can be formed from string A. Step 2: We can start by counting the occurrences of each character in string A and then use these counts to determine the number of times string B can be formed. Step 3: We can iterate through string B and use th...
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1f1b326cecce75915149cd42f290616aea2436cb70c3a995b4c2a72325e97a21
Coding
codecontest
Write Python code to solve the task. Sanket is a very organized person. He likes to organize everything to increase his efficiency. Whenever he sees a list of numbers he like to tag the number in ascending order. Recently he has realized he is wasting a lot of time doing that and thus want you to help him do it faster....
Step 1: The problem requires us to find the order of numbers in the given list in ascending order. Step 2: We need to process multiple test cases and for each test case, output the order of numbers in the list. Step 3: The solution should read the input, process each test case, and output the order of the numbers i...
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c21fbbda095ecc6faf66723ccd93d5644a2df33e7a28247a97f7a92e8056e6e5
Coding
codecontest
Write Python code to solve the task. Sanket is a very organized person. He likes to organize everything to increase his efficiency. Whenever he sees a list of numbers he like to tag the number in ascending order. Recently he has realized he is wasting a lot of time doing that and thus want you to help him do it faster....
Step 1: To solve this problem, we need to create a mapping of numbers to their positions in the sorted order. Step 2: First, we will read the input containing the number of testcases, the size of the array, and the list of numbers. Step 3: Then, we will create a mapping of the unique numbers in the array to their po...
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c21fbbda095ecc6faf66723ccd93d5644a2df33e7a28247a97f7a92e8056e6e5
Coding
codecontest
Write Python code to solve the task. There are N blocks arranged in a row. Let us paint these blocks. We will consider two ways to paint the blocks different if and only if there is a block painted in different colors in those two ways. Find the number of ways to paint the blocks under the following conditions: * Fo...
Step 1: To solve this problem, we need to find the number of ways to paint the blocks under the given conditions. Step 2: We have N blocks and M colors. We need to consider the constraints of at most K pairs of adjacent blocks that are painted in the same color. Step 3: We can use the combination formula to calcul...
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722dfce0457f0dd8e2d5ce31fc0a44b04194dfb65c2a11cd273283fa03197199
Coding
codecontest
Write Python code to solve the task. There are N blocks arranged in a row. Let us paint these blocks. We will consider two ways to paint the blocks different if and only if there is a block painted in different colors in those two ways. Find the number of ways to paint the blocks under the following conditions: * Fo...
Step 1: The problem asks us to find the number of ways to paint N blocks, each having one of M colors, under the condition that there may be at most K pairs of adjacent blocks painted in the same color. Step 2: We should consider using the combination formula (nCr) to calculate the number of valid combinations that s...
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722dfce0457f0dd8e2d5ce31fc0a44b04194dfb65c2a11cd273283fa03197199
Coding
codecontest
Write Python code to solve the task. Given are a sequence A= {a_1,a_2,......a_N} of N positive even numbers, and an integer M. Let a semi-common multiple of A be a positive integer X that satisfies the following condition for every k (1 \leq k \leq N): * There exists a non-negative integer p such that X= a_k \times (...
Step 1: The problem involves finding the number of semi-common multiples of a sequence A among the integers from 1 to M (inclusive). Step 2: We need to iterate through the sequence A and calculate the lowest common multiple of its elements. Step 3: Then we need to find the number of semi-common multiples within the...
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e3f26f09705146a72d2db16f4fab77baa23a45ec9a69fe4e6168f7afe29c0fc9
Coding
codecontest
Write Python code to solve the task. Given are a sequence A= {a_1,a_2,......a_N} of N positive even numbers, and an integer M. Let a semi-common multiple of A be a positive integer X that satisfies the following condition for every k (1 \leq k \leq N): * There exists a non-negative integer p such that X= a_k \times (...
Step 1: The goal is to find the number of semi-common multiples of A among the integers between 1 and M. Step 2: We need to iterate through all integers between 1 and M and check if each integer satisfies the conditions for a semi-common multiple of A. Step 3: We will use the least common multiple (LCM) of the given...
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e3f26f09705146a72d2db16f4fab77baa23a45ec9a69fe4e6168f7afe29c0fc9
Coding
codecontest
Write Python code to solve the task. Given are a prime number p and a sequence of p integers a_0, \ldots, a_{p-1} consisting of zeros and ones. Find a polynomial of degree at most p-1, f(x) = b_{p-1} x^{p-1} + b_{p-2} x^{p-2} + \ldots + b_0, satisfying the following conditions: * For each i (0 \leq i \leq p-1), b_i i...
Step 1: To solve this problem, we need to find a polynomial of degree at most p-1 that satisfies certain conditions. Step 2: We need to calculate the coefficients of the polynomial that satisfy the given conditions. These coefficients are integers between 0 and p-1. Step 3: We also need to consider the congruence re...
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088254554a2a3112c04ee43e19ad160affc6976f3e80f97dbd1c2fb675c992d3
Coding
codecontest
Write Python code to solve the task. Given are a prime number p and a sequence of p integers a_0, \ldots, a_{p-1} consisting of zeros and ones. Find a polynomial of degree at most p-1, f(x) = b_{p-1} x^{p-1} + b_{p-2} x^{p-2} + \ldots + b_0, satisfying the following conditions: * For each i (0 \leq i \leq p-1), b_i i...
Step 1: To satisfy the given conditions, we need to find the polynomial f(x) which satisfies the congruence condition and has integer coefficients within the given range. Step 2: We will first calculate the binomial coefficients (nCr) modulo p and pre-calculate the powers of j modulo p. Step 3: Then, for each r in t...
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088254554a2a3112c04ee43e19ad160affc6976f3e80f97dbd1c2fb675c992d3
Coding
codecontest
Write Python code to solve the task. You are given an array of n integers: a_1, a_2, …, a_n. Your task is to find some non-zero integer d (-10^3 ≀ d ≀ 10^3) such that, after each number in the array is divided by d, the number of positive numbers that are presented in the array is greater than or equal to half of the a...
Step 1: The problem requires finding a non-zero integer that, when used to divide each element in the array, results in at least half of the array size being positive numbers. Step 2: We need to identify the counts of positive numbers, negative numbers, and zeros in the array. Step 3: If the count of positive number...
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19f59be1aeefa706c68980966bc59a65154900ccb1c3ccd532ac87d6bce26847
Coding
codecontest
Write Python code to solve the task. You are given an array of n integers: a_1, a_2, …, a_n. Your task is to find some non-zero integer d (-10^3 ≀ d ≀ 10^3) such that, after each number in the array is divided by d, the number of positive numbers that are presented in the array is greater than or equal to half of the a...
Step 1: The problem asks for finding a non-zero integer d such that, after each element in the array is divided by d, the number of positive numbers is greater than or equal to half of the array size. Step 2: We can iterate through the array to count the number of positive, negative, and non-zero elements. Step 3: T...
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19f59be1aeefa706c68980966bc59a65154900ccb1c3ccd532ac87d6bce26847
Coding
codecontest
Write Python code to solve the task. Xenia is an amateur programmer. Today on the IT lesson she learned about the Hamming distance. The Hamming distance between two strings s = s1s2... sn and t = t1t2... tn of equal length n is value <image>. Record [si β‰  ti] is the Iverson notation and represents the following: if si...
Step 1: The problem requires us to calculate the Hamming distance between two long strings by the multiplication of the concatenation. Step 2: We need to understand how to calculate the Hamming distance given the strings x and y and then apply the same logic to the given input strings n, x, m, and y. Step 3: We wil...
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