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The dataset generation failed
Error code:   DatasetGenerationError
Exception:    CastError
Message:      Couldn't cast
name: string
description: string
public_tests: struct<input: list<item: string>, output: list<item: string>>
  child 0, input: list<item: string>
      child 0, item: string
  child 1, output: list<item: string>
      child 0, item: string
private_tests: struct<input: list<item: string>, output: list<item: string>>
  child 0, input: list<item: string>
      child 0, item: string
  child 1, output: list<item: string>
      child 0, item: string
generated_tests: struct<input: list<item: string>, output: list<item: string>>
  child 0, input: list<item: string>
      child 0, item: string
  child 1, output: list<item: string>
      child 0, item: string
source: int64
difficulty: int64
solutions: string
incorrect_solutions: struct<language: list<item: int64>, solution: list<item: string>>
  child 0, language: list<item: int64>
      child 0, item: int64
  child 1, solution: list<item: string>
      child 0, item: string
cf_contest_id: int64
cf_index: string
cf_points: double
cf_rating: int64
cf_tags: list<item: string>
  child 0, item: string
is_description_translated: bool
untranslated_description: string
time_limit: struct<seconds: int64, nanos: int64>
  child 0, seconds: int64
  child 1, nanos: int64
memory_limit_bytes: int64
input_file: string
output_file: string
input_output: string
starter_code: string
url: string
id: int64
question: string
to
{'id': Value('int64'), 'question': Value('string'), 'solutions': Value('string'), 'input_output': Value('string'), 'difficulty': Value('string'), 'url': Value('string'), 'starter_code': Value('string')}
because column names don't match
Traceback:    Traceback (most recent call last):
                File "/usr/local/lib/python3.14/site-packages/datasets/builder.py", line 1816, in _prepare_split_single
                  for key, table in generator:
                                    ^^^^^^^^^
                File "/src/services/worker/src/worker/job_runners/config/parquet_and_info.py", line 613, in wrapped
                  for item in generator(*args, **kwargs):
                              ~~~~~~~~~^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/packaged_modules/json/json.py", line 343, in _generate_tables
                  self._cast_table(pa_table, json_field_paths=json_field_paths),
                  ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/packaged_modules/json/json.py", line 132, in _cast_table
                  pa_table = table_cast(pa_table, self.info.features.arrow_schema)
                File "/usr/local/lib/python3.14/site-packages/datasets/table.py", line 2369, in table_cast
                  return cast_table_to_schema(table, schema)
                File "/usr/local/lib/python3.14/site-packages/datasets/table.py", line 2297, in cast_table_to_schema
                  raise CastError(
                  ...<3 lines>...
                  )
              datasets.table.CastError: Couldn't cast
              name: string
              description: string
              public_tests: struct<input: list<item: string>, output: list<item: string>>
                child 0, input: list<item: string>
                    child 0, item: string
                child 1, output: list<item: string>
                    child 0, item: string
              private_tests: struct<input: list<item: string>, output: list<item: string>>
                child 0, input: list<item: string>
                    child 0, item: string
                child 1, output: list<item: string>
                    child 0, item: string
              generated_tests: struct<input: list<item: string>, output: list<item: string>>
                child 0, input: list<item: string>
                    child 0, item: string
                child 1, output: list<item: string>
                    child 0, item: string
              source: int64
              difficulty: int64
              solutions: string
              incorrect_solutions: struct<language: list<item: int64>, solution: list<item: string>>
                child 0, language: list<item: int64>
                    child 0, item: int64
                child 1, solution: list<item: string>
                    child 0, item: string
              cf_contest_id: int64
              cf_index: string
              cf_points: double
              cf_rating: int64
              cf_tags: list<item: string>
                child 0, item: string
              is_description_translated: bool
              untranslated_description: string
              time_limit: struct<seconds: int64, nanos: int64>
                child 0, seconds: int64
                child 1, nanos: int64
              memory_limit_bytes: int64
              input_file: string
              output_file: string
              input_output: string
              starter_code: string
              url: string
              id: int64
              question: string
              to
              {'id': Value('int64'), 'question': Value('string'), 'solutions': Value('string'), 'input_output': Value('string'), 'difficulty': Value('string'), 'url': Value('string'), 'starter_code': Value('string')}
              because column names don't match
              
              The above exception was the direct cause of the following exception:
              
              Traceback (most recent call last):
                File "/src/services/worker/src/worker/job_runners/config/parquet_and_info.py", line 1369, in compute_config_parquet_and_info_response
                  parquet_operations, partial, estimated_dataset_info = stream_convert_to_parquet(
                                                                        ~~~~~~~~~~~~~~~~~~~~~~~~~^
                      builder, max_dataset_size_bytes=max_dataset_size_bytes
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                  )
                  ^
                File "/src/services/worker/src/worker/job_runners/config/parquet_and_info.py", line 948, in stream_convert_to_parquet
                  builder._prepare_split(split_generator=splits_generators[split], file_format="parquet")
                  ~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/builder.py", line 1683, in _prepare_split
                  for job_id, done, content in self._prepare_split_single(
                                               ~~~~~~~~~~~~~~~~~~~~~~~~~~^
                      gen_kwargs=gen_kwargs, job_id=job_id, **_prepare_split_args
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                  ):
                  ^
                File "/usr/local/lib/python3.14/site-packages/datasets/builder.py", line 1869, in _prepare_split_single
                  raise DatasetGenerationError("An error occurred while generating the dataset") from e
              datasets.exceptions.DatasetGenerationError: An error occurred while generating the dataset

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id
int64
question
string
solutions
string
input_output
string
difficulty
string
url
string
starter_code
string
0
Polycarp has $n$ different binary words. A word called binary if it contains only characters '0' and '1'. For example, these words are binary: "0001", "11", "0" and "0011100". Polycarp wants to offer his set of $n$ binary words to play a game "words". In this game, players name words and each next word (starting from ...
["for _ in range(int(input())):\n n = int(input())\n mass = []\n zo = 0\n oz = 0\n zz = 0\n oo = 0\n ozs = []\n zos = []\n ozss = set()\n zoss = set()\n for j in range(n):\n k = input()\n mass.append(k)\n if k[0] == '0' and k[-1] == '1':\n zoss.add(k)\n ...
{ "inputs": [ "4\n4\n0001\n1000\n0011\n0111\n3\n010\n101\n0\n2\n00000\n00001\n4\n01\n001\n0001\n00001\n" ], "outputs": [ "1\n3 \n-1\n0\n\n2\n1 2 \n" ] }
interview
https://codeforces.com/problemset/problem/1259/D
1
Mikhail walks on a Cartesian plane. He starts at the point $(0, 0)$, and in one move he can go to any of eight adjacent points. For example, if Mikhail is currently at the point $(0, 0)$, he can go to any of the following points in one move: $(1, 0)$; $(1, 1)$; $(0, 1)$; $(-1, 1)$; $(-1, 0)$; $(-1, -1)$; $(0, -...
["q=int(input())\n\nfor e in range(q):\n x,y,k=list(map(int,input().split()))\n x,y=abs(x),abs(y)\n x,y=max(x,y),min(x,y)\n \n if(x%2!=k%2):\n k-=1\n y-=1\n \n \n if(x>k):\n print(-1)\n continue\n if((x-y)%2):\n k-=1\n x-=1\n print(k)\n \n \n...
{ "inputs": [ "3\n2 2 3\n4 3 7\n10 1 9\n" ], "outputs": [ "1\n6\n-1\n" ] }
interview
https://codeforces.com/problemset/problem/1036/B
2
You are given three sequences: $a_1, a_2, \ldots, a_n$; $b_1, b_2, \ldots, b_n$; $c_1, c_2, \ldots, c_n$. For each $i$, $a_i \neq b_i$, $a_i \neq c_i$, $b_i \neq c_i$. Find a sequence $p_1, p_2, \ldots, p_n$, that satisfy the following conditions: $p_i \in \{a_i, b_i, c_i\}$ $p_i \neq p_{(i \mod n) + 1}$. In o...
["import sys\nimport random\nfrom fractions import Fraction\nfrom math import *\n \ndef input():\n return sys.stdin.readline().strip()\n \ndef iinput():\n return int(input())\n\ndef finput():\n return float(input())\n\ndef tinput():\n return input().split()\n\ndef linput():\n return list(input())\n \ndef...
{ "inputs": [ "5\n3\n1 1 1\n2 2 2\n3 3 3\n4\n1 2 1 2\n2 1 2 1\n3 4 3 4\n7\n1 3 3 1 1 1 1\n2 4 4 3 2 2 4\n4 2 2 2 4 4 2\n3\n1 2 1\n2 3 3\n3 1 2\n10\n1 1 1 2 2 2 3 3 3 1\n2 2 2 3 3 3 1 1 1 2\n3 3 3 1 1 1 2 2 2 3\n" ], "outputs": [ "1 2 3\n1 2 1 2\n1 3 4 1 2 1 4\n1 2 3\n1 2 1 2 3 2 3 1 3 2\n" ] }
interview
https://codeforces.com/problemset/problem/1408/A
3
You have $n$ barrels lined up in a row, numbered from left to right from one. Initially, the $i$-th barrel contains $a_i$ liters of water. You can pour water from one barrel to another. In one act of pouring, you can choose two different barrels $x$ and $y$ (the $x$-th barrel shouldn't be empty) and pour any possible ...
["def solve():\n n, k = map(int,input().split())\n lst = list(map(int,input().split()))\n lst.sort()\n ans = 0\n for i in range(n - k - 1, n):\n ans += lst[i]\n print(ans)\nfor i in range(int(input())):\n solve()", "t=int(input())\nfor i in range(t):\n n,k=[int(i) for i in input().split()...
{ "inputs": [ "2\n4 1\n5 5 5 5\n3 2\n0 0 0\n" ], "outputs": [ "10\n0\n" ] }
interview
https://codeforces.com/problemset/problem/1430/B
4
You are given a permutation $p=[p_1, p_2, \ldots, p_n]$ of integers from $1$ to $n$. Let's call the number $m$ ($1 \le m \le n$) beautiful, if there exists two indices $l, r$ ($1 \le l \le r \le n$), such that the numbers $[p_l, p_{l+1}, \ldots, p_r]$ is a permutation of numbers $1, 2, \ldots, m$. For example, let $p ...
["for _ in range(int(input())):\n input()\n nums = [int(x) for x in input().split()]\n new_ar = list(zip(nums,[i for i in range(len(nums))]))\n new_ar.sort()\n \n maxx = new_ar[0][1]\n minn = new_ar[0][1]\n s=\"1\"\n for j in range(1,len(new_ar)):\n if(new_ar[j][1]>maxx):\n ...
{ "inputs": [ "3\n6\n4 5 1 3 2 6\n5\n5 3 1 2 4\n4\n1 4 3 2\n" ], "outputs": [ "101011\n11111\n1001\n" ] }
interview
https://codeforces.com/problemset/problem/1265/B
5
The sequence of $m$ integers is called the permutation if it contains all integers from $1$ to $m$ exactly once. The number $m$ is called the length of the permutation. Dreamoon has two permutations $p_1$ and $p_2$ of non-zero lengths $l_1$ and $l_2$. Now Dreamoon concatenates these two permutations into another sequ...
["def possible(a):\n ans = set()\n s = set()\n lmax = 0\n for i in range(len(a)):\n lmax = max(lmax, a[i])\n s.add(a[i])\n if lmax == i + 1 and len(s) == i + 1:\n ans.add(i + 1)\n return ans\n\n\nt = int(input())\nfor case_num in range(t):\n n = int(input())\n a = li...
{ "inputs": [ "6\n5\n1 4 3 2 1\n6\n2 4 1 3 2 1\n4\n2 1 1 3\n4\n1 3 3 1\n12\n2 1 3 4 5 6 7 8 9 1 10 2\n3\n1 1 1\n" ], "outputs": [ "2\n1 4\n4 1\n1\n4 2\n0\n0\n1\n2 10\n0\n" ] }
interview
https://codeforces.com/problemset/problem/1330/B
6
Arthur owns a ski resort on a mountain. There are $n$ landing spots on the mountain numbered from $1$ to $n$ from the top to the foot of the mountain. The spots are connected with one-directional ski tracks. All tracks go towards the foot of the mountain, so there are no directed cycles formed by the tracks. There are ...
["import sys\ninput = sys.stdin.readline\nfor f in range(int(input())):\n n,m=list(map(int,input().split()))\n neig=[0]*n\n for i in range(n):\n neig[i]=[0]\n \n for i in range(m):\n a,b=list(map(int,input().split()))\n a-=1\n b-=1\n neig[a][0]+=1\n neig[a].appen...
{ "inputs": [ "2\n4 6\n1 2\n1 3\n2 3\n2 4\n3 4\n3 4\n7 6\n1 2\n1 3\n2 4\n2 5\n3 6\n3 7\n" ], "outputs": [ "2\n3 4 \n4\n4 5 6 7 \n" ] }
interview
https://codeforces.com/problemset/problem/1368/E
7
The only difference between easy and hard versions is constraints. Now elections are held in Berland and you want to win them. More precisely, you want everyone to vote for you. There are $n$ voters, and two ways to convince each of them to vote for you. The first way to convince the $i$-th voter is to pay him $p_i$ ...
["import sys\ndef I():\n return sys.stdin.readline().rstrip()\n\nclass Heap:\n def __init__( self ):\n self.l = [ -1 ]\n self.n = 0\n def n( self ):\n return self.n\n def top( self ):\n return self.l[ 1 ]\n def ins( self, x ):\n self.l.append( x )\n n = len( self...
{ "inputs": [ "3\n3\n1 5\n2 10\n2 8\n7\n0 1\n3 1\n1 1\n6 1\n1 1\n4 1\n4 1\n6\n2 6\n2 3\n2 8\n2 7\n4 4\n5 5\n" ], "outputs": [ "8\n0\n7\n" ] }
interview
https://codeforces.com/problemset/problem/1251/E2
8
You like playing chess tournaments online. In your last tournament you played $n$ games. For the sake of this problem, each chess game is either won or lost (no draws). When you lose a game you get $0$ points. When you win you get $1$ or $2$ points: if you have won also the previous game you get $2$ points, otherwise ...
["import sys\ninput = sys.stdin.readline\n\ndef main():\n n, k = map(int, input().split())\n string = input().strip()\n if \"W\" not in string:\n ans = min(n, k) * 2 - 1\n print(max(ans, 0))\n return\n \n L_s = []\n cnt = 0\n bef = string[0]\n ans = 0\n for s in strin...
{ "inputs": [ "8\n5 2\nWLWLL\n6 5\nLLLWWL\n7 1\nLWLWLWL\n15 5\nWWWLLLWWWLLLWWW\n40 7\nLLWLWLWWWLWLLWLWWWLWLLWLLWLLLLWLLWWWLWWL\n1 0\nL\n1 1\nL\n6 1\nWLLWLW\n" ], "outputs": [ "7\n11\n6\n26\n46\n0\n1\n6\n" ] }
interview
https://codeforces.com/problemset/problem/1427/B
9
Alice and Bob play a game. They have a binary string $s$ (a string such that each character in it is either $0$ or $1$). Alice moves first, then Bob, then Alice again, and so on. During their move, the player can choose any number (not less than one) of consecutive equal characters in $s$ and delete them. For example...
["for _ in range(int(input())):\n s = input()\n p = [i for i in s.split(\"0\") if i!=\"\"]\n p.sort(reverse=True)\n ans = 0\n for i in range(0,len(p),2):\n ans+=len(p[i])\n print(ans)\n\n", "for _ in range(int(input())):\n s=[len(i)for i in input().split('0')]\n s.sort()\n print(sum(s[...
{ "inputs": [ "5\n01111001\n0000\n111111\n101010101\n011011110111\n" ], "outputs": [ "4\n0\n6\n3\n6\n" ] }
interview
https://codeforces.com/problemset/problem/1398/B
10
Given a permutation $p$ of length $n$, find its subsequence $s_1$, $s_2$, $\ldots$, $s_k$ of length at least $2$ such that: $|s_1-s_2|+|s_2-s_3|+\ldots+|s_{k-1}-s_k|$ is as big as possible over all subsequences of $p$ with length at least $2$. Among all such subsequences, choose the one whose length, $k$, is as small...
["for _ in range(int(input())):\n # n, x = map(int, input().split())\n n = int(input())\n arr = list(map(int, input().split()))\n ans = [arr[0]]\n for i in range(1, n - 1):\n if arr[i - 1] < arr[i] and arr[i] > arr[i + 1]:\n ans.append(arr[i])\n elif arr[i - 1] > arr[i] and arr[i...
{ "inputs": [ "2\n3\n3 2 1\n4\n1 3 4 2\n" ], "outputs": [ "2\n3 1 \n3\n1 4 2 \n" ] }
interview
https://codeforces.com/problemset/problem/1364/B
11
You have a string $s$ — a sequence of commands for your toy robot. The robot is placed in some cell of a rectangular grid. He can perform four commands: 'W' — move one cell up; 'S' — move one cell down; 'A' — move one cell left; 'D' — move one cell right. Let $Grid(s)$ be the grid of minimum possible area such th...
["n = int(input())\n\ndef area(width, height) :\n return (width+1) * (height+1)\n\ndef calcul(s1, c, s2) :\n maxx, maxy, minx, miny = 0, 0, 0, 0\n x, y = 0, 0\n for k in range(len(s1)) :\n if s1[k] == \"W\" :\n y += 1\n if s1[k] == \"S\" :\n y -= 1\n if s1[k] == \"...
{ "inputs": [ "3\nDSAWWAW\nD\nWA\n" ], "outputs": [ "8\n2\n4\n" ] }
interview
https://codeforces.com/problemset/problem/1202/C
12
Once again, Boris needs the help of Anton in creating a task. This time Anton needs to solve the following problem: There are two arrays of integers $a$ and $b$ of length $n$. It turned out that array $a$ contains only elements from the set $\{-1, 0, 1\}$. Anton can perform the following sequence of operations any nu...
["from math import *\n\nmod = 1000000007\n\nfor zz in range(int(input())):\n n = int(input())\n a = [ int(i) for i in input().split()]\n b = [int(i) for i in input().split()]\n ha = True\n hp = False\n hm = False\n for i in range(n):\n if b[i] != a[i]:\n if b[i] > a[i]:\n ...
{ "inputs": [ "5\n3\n1 -1 0\n1 1 -2\n3\n0 1 1\n0 2 2\n2\n1 0\n1 41\n2\n-1 0\n-1 -41\n5\n0 1 -1 1 -1\n1 1 -1 1 -1\n" ], "outputs": [ "YES\nNO\nYES\nYES\nNO\n" ] }
interview
https://codeforces.com/problemset/problem/1333/B
13
Your company was appointed to lay new asphalt on the highway of length $n$. You know that every day you can either repair one unit of the highway (lay new asphalt over one unit of the highway) or skip repairing. Skipping the repair is necessary because of the climate. The climate in your region is periodical: there ar...
["for i in range(int(input())):\n n,g,b=map(int,input().split())\n nn=(n+1)//2\n print(max(nn+(nn-1)//g*b,n))", "for _ in range(int(input())):\n n, g, b = list(map(int, input().split()))\n half = (n - 1) // 2 + 1\n\n ans = (g + b) * (half // g) - b # + (half % g)\n if half % g != 0:\n ans +...
{ "inputs": [ "3\n5 1 1\n8 10 10\n1000000 1 1000000\n" ], "outputs": [ "5\n8\n499999500000\n" ] }
interview
https://codeforces.com/problemset/problem/1303/B
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