message stringlengths 2 433k | message_type stringclasses 2
values | message_id int64 0 1 | conversation_id int64 113 108k | cluster float64 12 12 | __index_level_0__ int64 226 217k |
|---|---|---|---|---|---|
Provide tags and a correct Python 2 solution for this coding contest problem.
You are given a sequence of n integers a_1, a_2, ..., a_n. Let us call an index j (2 ≤ j ≤ {{n-1}}) a hill if a_j > a_{{j+1}} and a_j > a_{{j-1}}; and let us call it a valley if a_j < a_{{j+1}} and a_j < a_{{j-1}}.
Let us define the intimid... | instruction | 0 | 74,385 | 12 | 148,770 |
Tags: brute force, implementation
Correct Solution:
```
""" Python 3 compatibility tools. """
from __future__ import division, print_function
import itertools
import sys
import os
from io import BytesIO
from atexit import register
if sys.version_info[0] < 3:
input = raw_input
range = xrange
filter = ite... | output | 1 | 74,385 | 12 | 148,771 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a sequence of n integers a_1, a_2, ..., a_n. Let us call an index j (2 ≤ j ≤ {{n-1}}) a hill if a_j > a_{{j+1}} and a_j > a_{{j-1}}; and let us call it a valley if a_j < a_{{j+1}} and a_j < a_{{j-1}}.
Let us define the intimid... | instruction | 0 | 74,386 | 12 | 148,772 |
Tags: brute force, implementation
Correct Solution:
```
# ---------------------------iye ha aam zindegi---------------------------------------------
import math
import random
import heapq, bisect
import sys
from collections import deque, defaultdict
from fractions import Fraction
import sys
#import threading
from colle... | output | 1 | 74,386 | 12 | 148,773 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a sequence of n integers a_1, a_2, ..., a_n. Let us call an index j (2 ≤ j ≤ {{n-1}}) a hill if a_j > a_{{j+1}} and a_j > a_{{j-1}}; and let us call it a valley if a_j < a_{{j+1}} and a_j < a_{{j-1}}.
Let us define the intimid... | instruction | 0 | 74,387 | 12 | 148,774 |
Tags: brute force, implementation
Correct Solution:
```
import io
import os
from collections import Counter, defaultdict, deque
def solve(N, A):
score = [0] * N
for i in range(1, N - 1):
s = 0
if A[i - 1] < A[i] > A[i + 1]:
s += 1
if A[i - 1] > A[i] < A[i + 1]:
... | output | 1 | 74,387 | 12 | 148,775 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a sequence of n integers a_1, a_2, ..., a_n. Let us call an index j (2 ≤ j ≤ {{n-1}}) a hill if a_j > a_{{j+1}} and a_j > a_{{j-1}}; and let us call it a valley if a_j < a_{{j+1}} and a_j < a_{{j-1}}.
Let us define the intimid... | instruction | 0 | 74,388 | 12 | 148,776 |
Tags: brute force, implementation
Correct Solution:
```
import typing
import sys
import math
import collections
import bisect
import itertools
import heapq
import decimal
import copy
import operator
# sys.setrecursionlimit(10000001)
INF = 10 ** 20
MOD = 10 ** 9 + 7
# MOD = 998244353
# buffer.readline()
def ni(): ret... | output | 1 | 74,388 | 12 | 148,777 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a sequence of n integers a_1, a_2, ..., a_n. Let us call an index j (2 ≤ j ≤ {{n-1}}) a hill if a_j > a_{{j+1}} and a_j > a_{{j-1}}; and let us call it a valley if a_j < a_{{j+1}} and a_j < a_{{j-1}}.
Let us define the intimid... | instruction | 0 | 74,389 | 12 | 148,778 |
Tags: brute force, implementation
Correct Solution:
```
def hv_test(a,b,c):
if (a < b > c) or (a > b < c):
return True
else:
return False
t = int(input())
for _ in range(t):
n = int(input())
arr = list(map(lambda x : int(x), input().split()))
##precompute hill/valley info
is_h... | output | 1 | 74,389 | 12 | 148,779 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a sequence of n integers a_1, a_2, ..., a_n. Let us call an index j (2 ≤ j ≤ {{n-1}}) a hill if a_j > a_{{j+1}} and a_j > a_{{j-1}}; and let us call it a valley if a_j < a_{{j+1}} and a_j < a_{{j-1}}.
Let us define the intimid... | instruction | 0 | 74,390 | 12 | 148,780 |
Tags: brute force, implementation
Correct Solution:
```
for i in range(int(input())):
n=int(input())
arr = list(map(int, input().split()))
ans=0
c=0
ma=0
for i in range(1,n-1):
c=arr[i]
cntn=0
for j in range(max(1,i-1),min(i+2,n-1)):
if arr[j - 1] > arr[j] and... | output | 1 | 74,390 | 12 | 148,781 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a sequence of n integers a_1, a_2, ..., a_n. Let us call an index j (2 ≤ j ≤ {{n-1}}) a hill if a_j > a_{{j+1}} and a_j > a_{{j-1}}; and let us call it a valley if a_j < a_{{j+1}} and a_j < a_{{j-1}}.
Let us define the intimid... | instruction | 0 | 74,391 | 12 | 148,782 |
Tags: brute force, implementation
Correct Solution:
```
import sys
import math
from collections import defaultdict,Counter
# input=sys.stdin.readline
# def print(x):
# sys.stdout.write(str(x)+"\n")
import os
import sys
from io import BytesIO, IOBase
BUFSIZE = 8192
class FastIO(IOBase):
newlines = 0
def __in... | output | 1 | 74,391 | 12 | 148,783 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a sequence of n integers a_1, a_2, ..., a_n. Let us call an index j (2 ≤ j ≤ {{n-1}}) a hill if a_j > a_{{j+1}} and a_j > a_{{j-1}}; and let us call it a valley if a_j < a_{{j+1}} and a_j < a_{{j-1}}.
Let us define the intimid... | instruction | 0 | 74,392 | 12 | 148,784 |
Tags: brute force, implementation
Correct Solution:
```
import os
import sys
from io import BytesIO, IOBase
BUFSIZE = 8192
class FastIO(IOBase):
newlines = 0
def __init__(self, file):
self._fd = file.fileno()
self.buffer = BytesIO()
self.writable = 'x' in file.mode or 'r' not in file... | output | 1 | 74,392 | 12 | 148,785 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a sequence of n integers a_1, a_2, ..., a_n. Let us call an index j (2 ≤ j ≤ {{n-1}}) a hill if a_j > a_{{j+1}} and a_j > a_{{j-1}}; and let us call it a valley if a_j < a_{{j+1}} and a_j < a_{{j-1}}.
Let us define the intimid... | instruction | 0 | 74,393 | 12 | 148,786 |
Tags: brute force, implementation
Correct Solution:
```
from pprint import pprint
import sys
input = sys.stdin.readline
def do():
n = int(input())
buf = list(map(int, input().split()))
dat = [-1] * (n + 4)
for i in range(n):
dat[i+2] = buf[i]
dat[0] = dat[1] = buf[0]
dat[n+2] = dat[n+3]... | output | 1 | 74,393 | 12 | 148,787 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a sequence of n integers a_1, a_2, ..., a_n. Let us call an index j (2 ≤ j ≤ {{n-1}}) a hill if a_j > a_{{j+1}} and a_j > a_{{j-1}}; and let us call it a valley if a_j < a_{{j+1}} ... | instruction | 0 | 74,395 | 12 | 148,790 |
Yes | output | 1 | 74,395 | 12 | 148,791 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a sequence of n integers a_1, a_2, ..., a_n. Let us call an index j (2 ≤ j ≤ {{n-1}}) a hill if a_j > a_{{j+1}} and a_j > a_{{j-1}}; and let us call it a valley if a_j < a_{{j+1}} ... | instruction | 0 | 74,397 | 12 | 148,794 |
Yes | output | 1 | 74,397 | 12 | 148,795 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Baby Badawy's first words were "AND 0 SUM BIG", so he decided to solve the following problem. Given two integers n and k, count the number of arrays of length n such that:
* all its elements are integers between 0 and 2^k-1 (inclusive);
... | instruction | 0 | 74,418 | 12 | 148,836 |
Tags: bitmasks, combinatorics, math
Correct Solution:
```
import os,sys
from io import BytesIO, IOBase
from collections import deque, Counter,defaultdict as dft
from heapq import heappop ,heappush
from math import log,sqrt,factorial,cos,tan,sin,radians,log2,ceil,floor,gcd
from bisect import bisect,bisect_left,bisect_r... | output | 1 | 74,418 | 12 | 148,837 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Baby Badawy's first words were "AND 0 SUM BIG", so he decided to solve the following problem. Given two integers n and k, count the number of arrays of length n such that:
* all its elements are integers between 0 and 2^k-1 (inclusive);
... | instruction | 0 | 74,419 | 12 | 148,838 |
Tags: bitmasks, combinatorics, math
Correct Solution:
```
for _ in range(int(input())):
n,k = map(int,input().split())
a = pow(n,k,pow(10,9)+7)
if n==1:
a = 1
a = a%(pow(10,9)+7)
print(a)
``` | output | 1 | 74,419 | 12 | 148,839 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Baby Badawy's first words were "AND 0 SUM BIG", so he decided to solve the following problem. Given two integers n and k, count the number of arrays of length n such that:
* all its elements are integers between 0 and 2^k-1 (inclusive);
... | instruction | 0 | 74,420 | 12 | 148,840 |
Tags: bitmasks, combinatorics, math
Correct Solution:
```
#pyrival orz
import os
import sys
import math
from io import BytesIO, IOBase
input = sys.stdin.readline
############ ---- Input Functions ---- ############
def inp():
return(int(input()))
def inlt():
return(list(map(int,input().split())))
def insr():
... | output | 1 | 74,420 | 12 | 148,841 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Baby Badawy's first words were "AND 0 SUM BIG", so he decided to solve the following problem. Given two integers n and k, count the number of arrays of length n such that:
* all its elements are integers between 0 and 2^k-1 (inclusive);
... | instruction | 0 | 74,421 | 12 | 148,842 |
Tags: bitmasks, combinatorics, math
Correct Solution:
```
for s in[*open(0)][1:]:print(pow(*map(int,s.split()),10**9+7))
``` | output | 1 | 74,421 | 12 | 148,843 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Baby Badawy's first words were "AND 0 SUM BIG", so he decided to solve the following problem. Given two integers n and k, count the number of arrays of length n such that:
* all its elements are integers between 0 and 2^k-1 (inclusive);
... | instruction | 0 | 74,422 | 12 | 148,844 |
Tags: bitmasks, combinatorics, math
Correct Solution:
```
for _ in range(int(input())):
n,k = map(int,input().split())
m = 1000000007
x = n**k % m
print(x)
``` | output | 1 | 74,422 | 12 | 148,845 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Baby Badawy's first words were "AND 0 SUM BIG", so he decided to solve the following problem. Given two integers n and k, count the number of arrays of length n such that:
* all its elements are integers between 0 and 2^k-1 (inclusive);
... | instruction | 0 | 74,423 | 12 | 148,846 |
Tags: bitmasks, combinatorics, math
Correct Solution:
```
t=int(input())
for i in range(t):
n,k=map(int,input().split())
print((n**k)%(10**9+7))
``` | output | 1 | 74,423 | 12 | 148,847 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Baby Badawy's first words were "AND 0 SUM BIG", so he decided to solve the following problem. Given two integers n and k, count the number of arrays of length n such that:
* all its elements are integers between 0 and 2^k-1 (inclusive);
... | instruction | 0 | 74,424 | 12 | 148,848 |
Tags: bitmasks, combinatorics, math
Correct Solution:
```
t = int(input())
MOD = 10 ** 9 + 7
for _ in range(t):
n, k = map(int, input().split())
print(pow(n,k,MOD))
``` | output | 1 | 74,424 | 12 | 148,849 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Baby Badawy's first words were "AND 0 SUM BIG", so he decided to solve the following problem. Given two integers n and k, count the number of arrays of length n such that:
* all its elements are integers between 0 and 2^k-1 (inclusive);
... | instruction | 0 | 74,425 | 12 | 148,850 |
Tags: bitmasks, combinatorics, math
Correct Solution:
```
from sys import stdin
input = stdin.readline
from heapq import heapify,heappush,heappop,heappushpop
from collections import defaultdict as dd, deque as dq,Counter as C
from math import factorial as f ,ceil,gcd,sqrt,log
from bisect import bisect_left as bl ,bisec... | output | 1 | 74,425 | 12 | 148,851 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given an array a_1, a_2, ..., a_n consisting of n distinct integers. Count the number of pairs of indices (i, j) such that i < j and a_i ⋅ a_j = i + j.
Input
The first line contains one integer t (1 ≤ t ≤ 10^4) — the number of test... | instruction | 0 | 74,434 | 12 | 148,868 |
Tags: brute force, implementation, math, number theory
Correct Solution:
```
t=int(input())
for _ in range(t):
n=int(input())
temp=0
x=list(map(int,input().split()))
for i in range(n):
for j in range(x[i]-i-2,n,x[i]):
if(i<j and (x[i]*x[j])==i+j+2):
temp+=1
print(... | output | 1 | 74,434 | 12 | 148,869 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given an array a_1, a_2, ..., a_n consisting of n distinct integers. Count the number of pairs of indices (i, j) such that i < j and a_i ⋅ a_j = i + j.
Input
The first line contains one integer t (1 ≤ t ≤ 10^4) — the number of test... | instruction | 0 | 74,435 | 12 | 148,870 |
Tags: brute force, implementation, math, number theory
Correct Solution:
```
for _ in range(int(input())):
n = int(input())
'''n,k = map(int,input().split())'''
l = list(map(int,input().split()))
dp = [-1]*(2*n + 1)
for i in range(n):
dp[l[i]] = i+1
ans = 0
for i in range(n):
... | output | 1 | 74,435 | 12 | 148,871 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given an array a_1, a_2, ..., a_n consisting of n distinct integers. Count the number of pairs of indices (i, j) such that i < j and a_i ⋅ a_j = i + j.
Input
The first line contains one integer t (1 ≤ t ≤ 10^4) — the number of test... | instruction | 0 | 74,436 | 12 | 148,872 |
Tags: brute force, implementation, math, number theory
Correct Solution:
```
for _ in range(int(input())):
n=int(input())
a = list(map(int,input().strip().split()))
c=0
for i in range(n-1):
for j in range(a[i]-i-2,n,a[i]):
if a[j]*a[i]==i+j+2 and j>i:
c+=1
print(c... | output | 1 | 74,436 | 12 | 148,873 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given an array a_1, a_2, ..., a_n consisting of n distinct integers. Count the number of pairs of indices (i, j) such that i < j and a_i ⋅ a_j = i + j.
Input
The first line contains one integer t (1 ≤ t ≤ 10^4) — the number of test... | instruction | 0 | 74,437 | 12 | 148,874 |
Tags: brute force, implementation, math, number theory
Correct Solution:
```
n = int(input())
for m in range(n):
x = int(input())
l = list(map(int, input().split()))
k = 0
for i in range(1, x):
b = -i%l[i-1]
for j in range (b, x + 1, l[i-1]):
if (l[i-1]*l[j-1]==i+j and j > i)... | output | 1 | 74,437 | 12 | 148,875 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given an array a_1, a_2, ..., a_n consisting of n distinct integers. Count the number of pairs of indices (i, j) such that i < j and a_i ⋅ a_j = i + j.
Input
The first line contains one integer t (1 ≤ t ≤ 10^4) — the number of test... | instruction | 0 | 74,438 | 12 | 148,876 |
Tags: brute force, implementation, math, number theory
Correct Solution:
```
def getPairs(arr, n):
ans = 0
for i in range(1, n + 1):
temp = arr[i] - i
while temp <= n:
if temp <= i:
temp += arr[i]
continue
if arr[i] * arr[temp] == i + temp... | output | 1 | 74,438 | 12 | 148,877 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given an array a_1, a_2, ..., a_n consisting of n distinct integers. Count the number of pairs of indices (i, j) such that i < j and a_i ⋅ a_j = i + j.
Input
The first line contains one integer t (1 ≤ t ≤ 10^4) — the number of test... | instruction | 0 | 74,439 | 12 | 148,878 |
Tags: brute force, implementation, math, number theory
Correct Solution:
```
def fast3():
import os, sys, atexit
from io import BytesIO
sys.stdout = BytesIO()
_write = sys.stdout.write
sys.stdout.write = lambda s: _write(s.encode())
atexit.register(lambda: os.write(1, sys.stdout.getvalue()))
... | output | 1 | 74,439 | 12 | 148,879 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given an array a_1, a_2, ..., a_n consisting of n distinct integers. Count the number of pairs of indices (i, j) such that i < j and a_i ⋅ a_j = i + j.
Input
The first line contains one integer t (1 ≤ t ≤ 10^4) — the number of test... | instruction | 0 | 74,440 | 12 | 148,880 |
Tags: brute force, implementation, math, number theory
Correct Solution:
```
def func():
count = 0
# print(a)
for i in range(1, n+1):
for j in range(a[i]-i, n+1, a[i]):
if j < 0:
continue
if i + j == a[i] * a[j] and i < j:
count += 1
print... | output | 1 | 74,440 | 12 | 148,881 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given an array a_1, a_2, ..., a_n consisting of n distinct integers. Count the number of pairs of indices (i, j) such that i < j and a_i ⋅ a_j = i + j.
Input
The first line contains one integer t (1 ≤ t ≤ 10^4) — the number of test... | instruction | 0 | 74,441 | 12 | 148,882 |
Tags: brute force, implementation, math, number theory
Correct Solution:
```
from sys import path_hooks, stdin, stdout
from collections import Counter,deque
import math
from copy import deepcopy
import random
import heapq
from itertools import permutations, product, repeat
from time import time
from bisect import bise... | output | 1 | 74,441 | 12 | 148,883 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given an array a_1, a_2, ..., a_n consisting of n distinct integers. Count the number of pairs of indices (i, j) such that i < j and a_i ⋅ a_j = i + j.
Input
The first line contains on... | instruction | 0 | 74,445 | 12 | 148,890 |
Yes | output | 1 | 74,445 | 12 | 148,891 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Find an n × n matrix with different numbers from 1 to n2, so the sum in each row, column and both main diagonals are odd.
Input
The only line contains odd integer n (1 ≤ n ≤ 49).
Output
Print n lines with n integers. All the integers sho... | instruction | 0 | 74,626 | 12 | 149,252 |
Tags: constructive algorithms, math
Correct Solution:
```
from math import *
n = int(input())
nn = 1
nc = 2
a = []
for i in range(n):
a.append([0] * n)
for q in range(n):
#print(i, q, (n - 1) // 2 - i + (n - 1) // 2 - q)
if abs((n - 1) // 2 - i) + abs((n - 1) // 2 - q) <= (n - 1) // 2:
... | output | 1 | 74,626 | 12 | 149,253 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Find an n × n matrix with different numbers from 1 to n2, so the sum in each row, column and both main diagonals are odd.
Input
The only line contains odd integer n (1 ≤ n ≤ 49).
Output
Print n lines with n integers. All the integers sho... | instruction | 0 | 74,627 | 12 | 149,254 |
Tags: constructive algorithms, math
Correct Solution:
```
n = int(input())
it = n//2
n1,n2 = 1,2
for i in range(n):
for j in range(n):
if j >= it and j <= n-it-1:
print(n1,end = ' ')
n1+=2;
else:
print(n2, end = ' ')
n2+=2
if i < n/2-1:
it-... | output | 1 | 74,627 | 12 | 149,255 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Find an n × n matrix with different numbers from 1 to n2, so the sum in each row, column and both main diagonals are odd.
Input
The only line contains odd integer n (1 ≤ n ≤ 49).
Output
Print n lines with n integers. All the integers sho... | instruction | 0 | 74,628 | 12 | 149,256 |
Tags: constructive algorithms, math
Correct Solution:
```
n=int(input())
a=[i for i in range(1,n*n+1)]
even=[]
odd=[]
for x in a:
if x%2==0:
even.append(x)
else:
odd.append(x)
c=1
for i in range(n):
si=(n-c)//2
ei=si+c-1
for j in range(n):
if j>=si and j<=ei:
pr... | output | 1 | 74,628 | 12 | 149,257 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Find an n × n matrix with different numbers from 1 to n2, so the sum in each row, column and both main diagonals are odd.
Input
The only line contains odd integer n (1 ≤ n ≤ 49).
Output
Print n lines with n integers. All the integers sho... | instruction | 0 | 74,630 | 12 | 149,260 |
Tags: constructive algorithms, math
Correct Solution:
```
n = int(input())
mat = [["-1"]*n for a in range(n)]
mat[0][n//2]="1"
pos = [0, n//2]
for num in range(2, n**2+1):
if pos[0]-1<0 and pos[1]+1>=n:
pos[0]+=1
elif pos[0]-1<0:
pos[0]=n-1
pos[1]+=1
elif pos[1]+1>=n:
pos[0... | output | 1 | 74,630 | 12 | 149,261 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Find an n × n matrix with different numbers from 1 to n2, so the sum in each row, column and both main diagonals are odd.
Input
The only line contains odd integer n (1 ≤ n ≤ 49).
Output
Print n lines with n integers. All the integers sho... | instruction | 0 | 74,632 | 12 | 149,264 |
Tags: constructive algorithms, math
Correct Solution:
```
n=int(input())
magic=int((n-1)/2)
x = []
for t in range(magic, -1, -1):
x.append(t*'*'+'D'*(n-2*t)+t*'*')
for u in range(1, magic+1):
x.append(u*'*'+'D'*(n-2*u)+u*'*')
no = 1
ne = 2
for i in range(n):
for j in range(n):
if (x[i][j] == 'D'):
... | output | 1 | 74,632 | 12 | 149,265 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Find an n × n matrix with different numbers from 1 to n2, so the sum in each row, column and both main diagonals are odd.
Input
The only line contains odd integer n (1 ≤ n ≤ 49).
Output
Print n lines with n integers. All the integers sho... | instruction | 0 | 74,633 | 12 | 149,266 |
Tags: constructive algorithms, math
Correct Solution:
```
n = int( input() )
h = (n-1)//2
A = [[ 0 for c in range(n)] for r in range(n) ]
for r in range(n):
for c in range(n):
A[ (r+c-h)%n ][ (r-c+h)%n ] = r*n+c+1
for r in range(n):
print(' '.join( '{:d}'.format(x) for x in A[r] ))
``` | output | 1 | 74,633 | 12 | 149,267 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given an array of n integers a1... an. The cost of a subsegment is the number of unordered pairs of distinct indices within the subsegment that contain equal elements. Split the given array into k non-intersecting non-empty subsegmen... | instruction | 0 | 74,702 | 12 | 149,404 |
Tags: divide and conquer, dp
Correct Solution:
```
import sys
input = sys.stdin.readline
n, m = map(int, input().split())
a = [0]+list(map(int, input().split()))
buc = [0]*(n+1)
dp_p = [n*(n-1)//2]*(n+1)
dp_c = [0]*(n+1)
dp_p[0] = 0
buc[a[1]] = 1
L = R = 1
ans = 0
def cal(l, r):
global L, R, ans
while L < l:
... | output | 1 | 74,702 | 12 | 149,405 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given an array of n integers a1... an. The cost of a subsegment is the number of unordered pairs of distinct indices within the subsegment that contain equal elements. Split the given ar... | instruction | 0 | 74,703 | 12 | 149,406 |
No | output | 1 | 74,703 | 12 | 149,407 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given an array of n integers a1... an. The cost of a subsegment is the number of unordered pairs of distinct indices within the subsegment that contain equal elements. Split the given ar... | instruction | 0 | 74,704 | 12 | 149,408 |
No | output | 1 | 74,704 | 12 | 149,409 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given an array of n integers a1... an. The cost of a subsegment is the number of unordered pairs of distinct indices within the subsegment that contain equal elements. Split the given ar... | instruction | 0 | 74,705 | 12 | 149,410 |
No | output | 1 | 74,705 | 12 | 149,411 |
Provide a correct Python 3 solution for this coding contest problem.
Your task is to implement a double linked list.
Write a program which performs the following operations:
* insert x: insert an element with key x into the front of the list.
* delete x: delete the first element which has the key of x from the list.... | instruction | 0 | 74,940 | 12 | 149,880 |
"Correct Solution:
```
from collections import deque
queue=deque()
n=int(input())
for _ in range(n):
command=input().split()
if command[0]=="insert":
queue.appendleft(command[1])
if command[0]=="delete":
try:
queue.remove(command[1])
except:
pass
if command[0]=="deleteFirst":
queue.p... | output | 1 | 74,940 | 12 | 149,881 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a permutation p of n integers 1, 2, ..., n (a permutation is an array where each element from 1 to n occurs exactly once).
Let's call some subsegment p[l, r] of this permutation special if p_l + p_r = max _{i = l}^{r} p_i. Ple... | instruction | 0 | 75,047 | 12 | 150,094 |
Tags: data structures, divide and conquer, dsu, two pointers
Correct Solution:
```
mod = 1000000007
eps = 10**-9
def main():
import sys
input = sys.stdin.readline
class Bit:
def __init__(self, n):
self.size = n
self.tree = [0] * (n + 1)
def sum(self, i):
... | output | 1 | 75,047 | 12 | 150,095 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a permutation p of n integers 1, 2, ..., n (a permutation is an array where each element from 1 to n occurs exactly once).
Let's call some subsegment p[l, r] of this permutation special if p_l + p_r = max _{i = l}^{r} p_i. Ple... | instruction | 0 | 75,048 | 12 | 150,096 |
Tags: data structures, divide and conquer, dsu, two pointers
Correct Solution:
```
n=int(input())
a=list(map(int,input().split()))
if a==[i+1 for i in range(n)]:exit(print(0))
if a==[i+1 for i in range(n)][::-1]:exit(print(0))
p=[0]*(n+1)
p[0]=-1
for i in range(n):p[a[i]]=i
num=2**(n-1).bit_length()
def segfunc(x,y):
... | output | 1 | 75,048 | 12 | 150,097 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a permutation p of n integers 1, 2, ..., n (a permutation is an array where each element from 1 to n occurs exactly once).
Let's call some subsegment p[l, r] of this permutation special if p_l + p_r = max _{i = l}^{r} p_i. Ple... | instruction | 0 | 75,049 | 12 | 150,098 |
Tags: data structures, divide and conquer, dsu, two pointers
Correct Solution:
```
n=int(input())
a=[int(x) for x in input().split()]
def Count_Segment(a,n):
ans=0
upto=[0]*(n+1)
for i in range(1,n-1):
if a[i]>a[i-1] and a[i]>a[i+1]:
curr=a[i]
j=i-1
while j>=0 and a[j]<curr:
upto[a[j]]=curr
j-=1
... | output | 1 | 75,049 | 12 | 150,099 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a permutation p of n integers 1, 2, ..., n (a permutation is an array where each element from 1 to n occurs exactly once).
Let's call some subsegment p[l, r] of this permutation special if p_l + p_r = max _{i = l}^{r} p_i. Ple... | instruction | 0 | 75,050 | 12 | 150,100 |
Tags: data structures, divide and conquer, dsu, two pointers
Correct Solution:
```
import sys; input = sys.stdin.readline
import heapq as hq
n = int(input())
a = list(map(int, input().split()))
place = [0]*(n+1)
for i in range(n):
place[a[i]] = i
par = [-1]*n
nums = [{} for i in range(n)]
def find(x):
if x == par[x]:... | output | 1 | 75,050 | 12 | 150,101 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a permutation p of n integers 1, 2, ..., n (a permutation is an array where each element from 1 to n occurs exactly once).
Let's call some subsegment p[l, r] of this permutation special if p_l + p_r = max _{i = l}^{r} p_i. Ple... | instruction | 0 | 75,051 | 12 | 150,102 |
Tags: data structures, divide and conquer, dsu, two pointers
Correct Solution:
```
n = int(input())
a = list(map(int, input().split()))
p = list(range(n + 1))
s = [set() for i in range(n + 1)]
def find(x):
if p[x] != x:
p[x] = find(p[x])
return p[x]
def union(x, y, cur):
x, y = find(x), find(y)
... | output | 1 | 75,051 | 12 | 150,103 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a permutation p of n integers 1, 2, ..., n (a permutation is an array where each element from 1 to n occurs exactly once).
Let's call some subsegment p[l, r] of this permutation special if p_l + p_r = max _{i = l}^{r} p_i. Ple... | instruction | 0 | 75,052 | 12 | 150,104 |
Tags: data structures, divide and conquer, dsu, two pointers
Correct Solution:
```
n=int(input())
ns=[int(x) for x in input().split()]
# n=200000
# ns=[x+1 for x in range(n)]
"""
st=[[ns[i]]for i in range(n)]
for l in range(1,20):
for i in range(0,n+10,2**l):
if i+2**(l-1)<len(st):
st[i].append... | output | 1 | 75,052 | 12 | 150,105 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a permutation p of n integers 1, 2, ..., n (a permutation is an array where each element from 1 to n occurs exactly once).
Let's call some subsegment p[l, r] of this permutation special if p_l + p_r = max _{i = l}^{r} p_i. Ple... | instruction | 0 | 75,053 | 12 | 150,106 |
Tags: data structures, divide and conquer, dsu, two pointers
Correct Solution:
```
from collections import deque
from sys import stdin
def inv(perm):
invp = [None] * len(perm)
for i, p in enumerate(perm):
invp[p] = i
return invp
def main():
n = int(stdin.readline())
p = [int(x) - 1 for x in stdin.readline().sp... | output | 1 | 75,053 | 12 | 150,107 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a permutation p of n integers 1, 2, ..., n (a permutation is an array where each element from 1 to n occurs exactly once).
Let's call some subsegment p[l, r] of this permutation special if p_l + p_r = max _{i = l}^{r} p_i. Ple... | instruction | 0 | 75,054 | 12 | 150,108 |
Tags: data structures, divide and conquer, dsu, two pointers
Correct Solution:
```
def Count_Segment(a,n):
ans=0
upto=[False]*(n+1)
for i in range(1,n-1):
if a[i]>a[i-1] and a[i]>a[i+1]:
curr=a[i]
j=i-1
while j>=0 and a[j]<curr:
upto[a[j]]=curr
j-=1
j=i+1
while j<n and a[j]<curr:
if upt... | output | 1 | 75,054 | 12 | 150,109 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a permutation p of n integers 1, 2, ..., n (a permutation is an array where each element from 1 to n occurs exactly once).
Let's call some subsegment p[l, r] of this permutation s... | instruction | 0 | 75,055 | 12 | 150,110 |
Yes | output | 1 | 75,055 | 12 | 150,111 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a permutation p of n integers 1, 2, ..., n (a permutation is an array where each element from 1 to n occurs exactly once).
Let's call some subsegment p[l, r] of this permutation s... | instruction | 0 | 75,056 | 12 | 150,112 |
Yes | output | 1 | 75,056 | 12 | 150,113 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a permutation p of n integers 1, 2, ..., n (a permutation is an array where each element from 1 to n occurs exactly once).
Let's call some subsegment p[l, r] of this permutation s... | instruction | 0 | 75,057 | 12 | 150,114 |
No | output | 1 | 75,057 | 12 | 150,115 |
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