name stringlengths 2 112 | description stringlengths 29 9.39k | public_tests dict | private_tests dict | generated_tests dict | source int64 1 6 | difficulty int64 0 23 | solutions dict | cf_contest_id int64 0 1.55k | cf_index stringclasses 39
values | cf_points float64 0 5k | cf_rating int64 0 3.5k | cf_tags sequencelengths 0 8 | is_description_translated bool 2
classes | time_limit null | memory_limit_bytes int64 0 1.07B |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
brcktsrm | Problem description.
Vipul is a hardworking super-hero who maintains the bracket ratio of all the strings in the world. Recently he indulged himself in saving the string population so much that he lost his ability for checking brackets (luckily, not permanently ).Being his super-hero friend help him in his time of hard... | {
"input": [
"3\n((()))\n(())()\n()(()"
],
"output": [
"YES\nYES\nNO"
]
} | {
"input": [],
"output": []
} | {
"input": [
"3\n((()))\n(())()\n()())",
"3\n((()()\n(())()\n()(()",
"3\n((()))\n(())))\n()())",
"3\n)))(((\n(())))\n()())",
"3\n((()))\n(())()\n))(((",
"3\n((()()\n(())()\n()(((",
"3\n((()))\n(())()\n()()(",
"3\n((()()\n'())()\n()(((",
"3\n)))(((\n(())))\n()(*)",
"3\n)(()()\n'... | 1 | 6 | {
"language": [
1,
1,
1
],
"solution": [
"for _ in range(input()):\n try:\n eval(raw_input())\n print 'YES'\n except TypeError:\n print 'YES'\n except:\n print 'NO'",
"for _ in range(input()):\n ins = raw_input().strip()\n stck = []\n res = \"YES\"... | 0 | 0 | 0 | [] | false | null | 0 | |
comm3 | The Chef likes to stay in touch with his staff. So, the Chef, the head server, and the sous-chef all carry two-way transceivers so they can stay in constant contact. Of course, these transceivers have a limited range so if two are too far apart, they cannot communicate directly.
The Chef invested in top-of-the-line t... | {
"input": [
"3\n1\n0 1\n0 0\n1 0\n2\n0 1\n0 0\n1 0\n2\n0 0\n0 2\n2 1"
],
"output": [
"yes\nyes\nno\n"
]
} | {
"input": [],
"output": []
} | {
"input": [
"3\n1\n0 1\n0 -1\n1 0\n2\n0 1\n0 0\n1 0\n2\n0 0\n0 2\n2 1",
"3\n2\n0 1\n0 -1\n1 0\n2\n0 1\n0 0\n1 0\n2\n0 0\n0 2\n2 1",
"3\n2\n0 -1\n0 -1\n1 0\n2\n0 0\n0 0\n1 0\n2\n1 0\n1 2\n2 1",
"3\n2\n0 -1\n-1 -1\n2 0\n2\n1 0\n0 -1\n1 -1\n2\n1 0\n1 2\n1 1",
"3\n2\n0 -1\n0 -1\n2 0\n2\n2 0\n0 -1\n1 ... | 1 | 1 | {
"language": [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
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1,
1,
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1,
1,
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1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
... | 0 | 0 | 0 | [] | false | null | 0 | |
gcd2 | Frank explained its friend Felman the algorithm of Euclides to calculate the GCD
of two numbers. Then Felman implements it algorithm
int gcd(int a, int b)
{
if (b==0)
return a;
else
return gcd(b,a%b);
}
and it proposes to Frank that makes it
but with a little integer and another integer that has up to 250 d... | {
"input": [
"2\n2 6\n10 11"
],
"output": [
"2\n1\n"
]
} | {
"input": [],
"output": []
} | {
"input": [
"2\n3 6\n10 11",
"2\n1 3\n10 11",
"2\n0 6\n10 11",
"2\n0 6\n0 11",
"2\n3 6\n8 22",
"2\n3 6\n8 4",
"2\n5 2\n10 2",
"2\n4 10\n8 6",
"2\n7 14\n8 6",
"2\n7 14\n8 4",
"2\n2 6\n5 2",
"2\n0 14\n16 2",
"2\n0 11\n10 1",
"2\n0 14\n16 1",
"2\n1 3\n10 5",
... | 1 | 2 | {
"language": [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
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1,
1,
1,
1,
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1,
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1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
... | 0 | 0 | 0 | [] | false | null | 0 | |
luckybal | A Little Elephant from the Zoo of Lviv likes lucky strings, i.e., the strings that consist only of the lucky digits 4 and 7.
The Little Elephant calls some string T of the length M balanced if there exists at least one integer X (1 ≤ X ≤ M) such that the number of digits 4 in the substring T[1, X - 1] is equal to the n... | {
"input": [
"4\n47\n74\n477\n4747477"
],
"output": [
"2\n2\n3\n23\n"
]
} | {
"input": [],
"output": []
} | {
"input": [
"4\n47\n47\n477\n4747477",
"4\n7\n47\n477\n4747477",
"4\n4\n47\n477\n4747477",
"4\n7\n7\n477\n4747477",
"4\n7\n44\n477\n4747477",
"4\n44\n74\n477\n4747477",
"4\n7\n44\n7\n4747477",
"4\n47\n44\n477\n4747477",
"4\n47\n4\n477\n4747477",
"4\n7\n7\n447\n4747477",
"4... | 1 | 2 | {
"language": [
1,
1,
1,
1,
1
],
"solution": [
"n = input()\nfor i in range(n):\n str = raw_input()\n l = len(str)\n megacounter = 0\n counter = 0\n i = 0\n while(1):\n while(i<l and str[i]=='7'):\n i=i+1\n counter=counter+1\n if(i>=l):... | 0 | 0 | 0 | [] | false | null | 0 | |
prpaln | Given a string s. Can you make it a palindrome by deleting exactly one character? Note that size of the string after deletion would be one less than it was before.
Input
First line of the input contains a single integer T denoting number of test cases.
For each test case, you are given a single line containing string... | {
"input": [
"4\naaa\nabc\nabdbca\nabba"
],
"output": [
"YES\nNO\nYES\nYES\n"
]
} | {
"input": [],
"output": []
} | {
"input": [
"4\naaa\nabc\nabdbca\nabca",
"4\naaa\nabc\nabdbc`\naaca",
"4\naab\nacc\n`bd`cb\naaad",
"4\nbaa\nabc\n`bd`bb\naabd",
"4\nbab\nabb\nbb`db`\naabd",
"4\nbaa\n`aa\nbb`c`b\ndba`",
"4\nba`\n`aa\nbb`c_c\ndba`",
"4\n`a_\naa`\ndda`^c\nca^a",
"4\n_c`\n]`_\ncdad^`\n`c_^",
"4\n... | 1 | 2 | {
"language": [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
],
"solution": [
"import math\nimport sys\ndef checkpal(s):\n return s==s[::-1]\nfor a in range(input()):\n s=raw_input()\n l=len(s)\n if(l==2):\n print \"YES\"\n else:\n if chec... | 0 | 0 | 0 | [] | false | null | 0 | |
tf01 | An established group of scientists are working on finding solution to NP hard problems. They claim Subset Sum as an NP-hard problem. The problem is to determine whether there exists a subset of a given set S whose sum is a given number K.
You are a computer engineer and you claim to solve this problem given that all... | {
"input": [
"2\n5 10\n3 4 6 1 9\n3 2\n1 3 4"
],
"output": [
"1\n0"
]
} | {
"input": [],
"output": []
} | {
"input": [],
"output": []
} | 1 | 6 | {
"language": [
1
],
"solution": [
"import sys\n\nfor __ in range(input()) :\n n , k = map(int,sys.stdin.readline().split())\n lists = map(int,sys.stdin.readline().split())\n dp = [0]*(k+1)\n dp[0]=1\n for i in lists :\n for j in range(k-i,-1,-1) :\n if dp[k] :\n ... | 0 | 0 | 0 | [] | false | null | 0 | |
1012_E. Cycle sort | "You are given an array of n positive integers a_1, a_2, ..., a_n. You can perform the following ope(...TRUNCATED) | {"input":["5 5\n3 2 3 1 1\n","4 3\n2 1 4 3\n","2 0\n2 2\n"],"output":["1\n5\n1 4 2 3 5 \n","-1\n","0(...TRUNCATED) | {"input":["5 0\n884430748 884430748 708433020 708433020 708433020\n","2 1\n1 1\n","2 0\n2 1\n","5 2\(...TRUNCATED) | {"input":["5 0\n884430748 884430748 182474629 708433020 708433020\n","5 2\n65390026 1454694739 65390(...TRUNCATED) | 2 | 11 | {"language":[2,2,2,4,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,4,2,2,2,2,2,2,2,2,2,2(...TRUNCATED) | 1,012 | E | 2,500 | 3,100 | [
"dsu",
"math"
] | false | null | 256,000,000 |
1037_E. Trips | "There are n persons who initially don't know each other. On each morning, two of them, who were not(...TRUNCATED) | {"input":["4 4 2\n2 3\n1 2\n1 3\n1 4\n","5 8 2\n2 1\n4 2\n5 4\n5 2\n4 3\n5 1\n4 1\n3 2\n","5 7 2\n1 (...TRUNCATED) | {"input":["16 20 2\n10 3\n5 3\n10 5\n12 7\n7 6\n9 12\n9 6\n1 10\n11 16\n11 1\n16 2\n10 2\n14 4\n15 1(...TRUNCATED) | {"input":["16 20 2\n10 3\n5 3\n10 5\n12 7\n7 6\n9 10\n9 6\n1 10\n11 16\n11 1\n16 2\n10 2\n14 4\n15 1(...TRUNCATED) | 2 | 11 | {"language":[2,2,2,4,4,2,2,2,2,2,4,2,2,2,4,2,4,2,4,4,2,4,2,4,2,2,4,2,2,2,4,2,2,4,4,4,2,4,2,4,4,1,4,4(...TRUNCATED) | 1,037 | E | 2,250 | 2,200 | [
"graphs"
] | false | null | 256,000,000 |
1060_A. Phone Numbers | "Let's call a string a phone number if it has length 11 and fits the pattern \"8xxxxxxxxxx\", where (...TRUNCATED) | {"input":["22\n0011223344556677889988\n","11\n00000000008\n","11\n31415926535\n"],"output":["2\n","1(...TRUNCATED) | {"input":["51\n882889888888689888850888388887688788888888888858888\n","55\n7271714707719515303911625(...TRUNCATED) | {"input":["51\n1732111733638718702525811518175029394157760329139501\n","55\n815096522892298714932212(...TRUNCATED) | 2 | 7 | {"language":[3,2,3,1,2,3,3,3,4,4,2,3,1,2,3,1,3,1,1,3,4,3,4,2,3,2,4,3,3,1,2,3,3,2,3,1,3,1,2,4,3,3,4,3(...TRUNCATED) | 1,060 | A | 500 | 800 | [
"brute force"
] | false | null | 512,000,000 |
1081_G. Mergesort Strikes Back | "Chouti thought about his very first days in competitive programming. When he had just learned to wr(...TRUNCATED) | {"input":["3 2 998244353\n","9 3 998244353\n","3 1 998244353\n","9 4 998244353\n"],"output":["665496(...TRUNCATED) | {"input":["53812 4 967428361\n","7 2 400166453\n","75727 16 485722667\n","65536 10 802338989\n","655(...TRUNCATED) | {"input":["53812 5 967428361\n","12 2 400166453\n","27203 10 802338989\n","59715 12 196344479\n","14(...TRUNCATED) | 2 | 13 | {"language":[2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2(...TRUNCATED) | 1,081 | G | 3,500 | 3,200 | [
"math",
"probabilities"
] | false | null | 256,000,000 |
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