message stringlengths 2 22.8k | message_type stringclasses 2
values | message_id int64 0 1 | conversation_id int64 16 109k | cluster float64 1 1 | __index_level_0__ int64 32 217k |
|---|---|---|---|---|---|
Provide tags and a correct Python 3 solution for this coding contest problem.
A new innovative ticketing systems for public transport is introduced in Bytesburg. Now there is a single travel card for all transport. To make a trip a passenger scan his card and then he is charged according to the fare.
The fare is cons... | instruction | 0 | 23,383 | 1 | 46,766 |
Tags: binary search, dp
Correct Solution:
```
n=int(input())
ex1=0
ex2=0
L=[]
f=[0]*(n+1)
for i in range(n):
L.append(int(input()))
while (L[i] - L[ex1 ] >= 90):
ex1+=1
while (L[i] - L[ex2 ] >= 1440):
ex2+=1
f[i+1] = min(min(f[ex1] + 50, f[ex2] + 120), f[i] + 20)
print(f[i+1] - f[i])... | output | 1 | 23,383 | 1 | 46,767 |
Provide tags and a correct Python 3 solution for this coding contest problem.
A new innovative ticketing systems for public transport is introduced in Bytesburg. Now there is a single travel card for all transport. To make a trip a passenger scan his card and then he is charged according to the fare.
The fare is cons... | instruction | 0 | 23,384 | 1 | 46,768 |
Tags: binary search, dp
Correct Solution:
```
n=int(input())
trips=[]
prix=[0]
k=0
j=0
for i in range (n):
trips.append(int(input()))
while trips[i]-trips[j]>=90 :
j+=1
while trips[i]-trips[k]>=1440:
k+=1
prix.append(min(min(prix[k]+120,prix[j]+50),prix[-1]+20))
print(pri... | output | 1 | 23,384 | 1 | 46,769 |
Provide tags and a correct Python 3 solution for this coding contest problem.
A new innovative ticketing systems for public transport is introduced in Bytesburg. Now there is a single travel card for all transport. To make a trip a passenger scan his card and then he is charged according to the fare.
The fare is cons... | instruction | 0 | 23,385 | 1 | 46,770 |
Tags: binary search, dp
Correct Solution:
```
n=int(input())
trips=[]
prix=[0]
k=0
j=0
for i in range (n):
trips.append(int(input()))
while trips[i]-trips[j]>=90 :
j+=1
while trips[i]-trips[k]>=1440:
k+=1
prix.append(min(min(prix[k]+120,prix[j]+50),prix[-1]+20))
print(prix[-1]-prix[-... | output | 1 | 23,385 | 1 | 46,771 |
Provide tags and a correct Python 3 solution for this coding contest problem.
A new innovative ticketing systems for public transport is introduced in Bytesburg. Now there is a single travel card for all transport. To make a trip a passenger scan his card and then he is charged according to the fare.
The fare is cons... | instruction | 0 | 23,386 | 1 | 46,772 |
Tags: binary search, dp
Correct Solution:
```
def lower_bound(arr, left, right, target):
if arr[right - 1] < target:
return right
right -= 1
while left < right:
mid = (left + right) >> 1
if arr[mid] >= target:
right = mid
else:
left = mid + 1
retur... | output | 1 | 23,386 | 1 | 46,773 |
Provide tags and a correct Python 3 solution for this coding contest problem.
A new innovative ticketing systems for public transport is introduced in Bytesburg. Now there is a single travel card for all transport. To make a trip a passenger scan his card and then he is charged according to the fare.
The fare is cons... | instruction | 0 | 23,387 | 1 | 46,774 |
Tags: binary search, dp
Correct Solution:
```
#-*- coding:utf-8 -*-
#!/usr/bin/python3
n = int(input())
a = [0,]
for i in range(n):
x = int(input())
a.append(x)
dp = [0] * (n + 1)
dp[0] = 0
p90 = 1
p1440 = 1
for i in range(1, n + 1):
dp[i] = dp[i - 1] + 20
while a[p90] + 90 <= a[i]:
p90 = p90 + 1
dp[i] = min(d... | output | 1 | 23,387 | 1 | 46,775 |
Provide tags and a correct Python 3 solution for this coding contest problem.
A new innovative ticketing systems for public transport is introduced in Bytesburg. Now there is a single travel card for all transport. To make a trip a passenger scan his card and then he is charged according to the fare.
The fare is cons... | instruction | 0 | 23,388 | 1 | 46,776 |
Tags: binary search, dp
Correct Solution:
```
#Code by Sounak, IIESTS
#------------------------------warmup----------------------------
import os
import sys
import math
from io import BytesIO, IOBase
from fractions import Fraction
import collections
from itertools import permutations
#from collections import defaultdi... | output | 1 | 23,388 | 1 | 46,777 |
Provide tags and a correct Python 3 solution for this coding contest problem.
A new innovative ticketing systems for public transport is introduced in Bytesburg. Now there is a single travel card for all transport. To make a trip a passenger scan his card and then he is charged according to the fare.
The fare is cons... | instruction | 0 | 23,389 | 1 | 46,778 |
Tags: binary search, dp
Correct Solution:
```
def lower_bound(arr, left, right, target):
if arr[right]<target:
return right+1
while left < right:
mid = (left + right) >> 1
if arr[mid] >= target:
right = mid
else:
left = mid + 1
return left
T = int(inp... | output | 1 | 23,389 | 1 | 46,779 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
A new innovative ticketing systems for public transport is introduced in Bytesburg. Now there is a single travel card for all transport. To make a trip a passenger scan his card and then he is c... | instruction | 0 | 23,390 | 1 | 46,780 |
Yes | output | 1 | 23,390 | 1 | 46,781 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
A new innovative ticketing systems for public transport is introduced in Bytesburg. Now there is a single travel card for all transport. To make a trip a passenger scan his card and then he is c... | instruction | 0 | 23,391 | 1 | 46,782 |
Yes | output | 1 | 23,391 | 1 | 46,783 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
A new innovative ticketing systems for public transport is introduced in Bytesburg. Now there is a single travel card for all transport. To make a trip a passenger scan his card and then he is c... | instruction | 0 | 23,392 | 1 | 46,784 |
Yes | output | 1 | 23,392 | 1 | 46,785 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
A new innovative ticketing systems for public transport is introduced in Bytesburg. Now there is a single travel card for all transport. To make a trip a passenger scan his card and then he is c... | instruction | 0 | 23,393 | 1 | 46,786 |
Yes | output | 1 | 23,393 | 1 | 46,787 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
A new innovative ticketing systems for public transport is introduced in Bytesburg. Now there is a single travel card for all transport. To make a trip a passenger scan his card and then he is c... | instruction | 0 | 23,394 | 1 | 46,788 |
No | output | 1 | 23,394 | 1 | 46,789 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
A new innovative ticketing systems for public transport is introduced in Bytesburg. Now there is a single travel card for all transport. To make a trip a passenger scan his card and then he is c... | instruction | 0 | 23,395 | 1 | 46,790 |
No | output | 1 | 23,395 | 1 | 46,791 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
A new innovative ticketing systems for public transport is introduced in Bytesburg. Now there is a single travel card for all transport. To make a trip a passenger scan his card and then he is c... | instruction | 0 | 23,396 | 1 | 46,792 |
No | output | 1 | 23,396 | 1 | 46,793 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
A new innovative ticketing systems for public transport is introduced in Bytesburg. Now there is a single travel card for all transport. To make a trip a passenger scan his card and then he is c... | instruction | 0 | 23,397 | 1 | 46,794 |
No | output | 1 | 23,397 | 1 | 46,795 |
Provide a correct Python 3 solution for this coding contest problem.
In AtCoder City, there are three stations numbered 1, 2, and 3.
Each of these stations is operated by one of the two railway companies, A and B. A string S of length 3 represents which company operates each station. If S_i is `A`, Company A operates... | instruction | 0 | 23,574 | 1 | 47,148 |
"Correct Solution:
```
s = input()
print("No" if (s == "AAA" or s == "BBB") else "Yes")
``` | output | 1 | 23,574 | 1 | 47,149 |
Provide a correct Python 3 solution for this coding contest problem.
In AtCoder City, there are three stations numbered 1, 2, and 3.
Each of these stations is operated by one of the two railway companies, A and B. A string S of length 3 represents which company operates each station. If S_i is `A`, Company A operates... | instruction | 0 | 23,575 | 1 | 47,150 |
"Correct Solution:
```
s=input()
if "A"in s and "B"in s:print('Yes')
else:print('No')
``` | output | 1 | 23,575 | 1 | 47,151 |
Provide a correct Python 3 solution for this coding contest problem.
In AtCoder City, there are three stations numbered 1, 2, and 3.
Each of these stations is operated by one of the two railway companies, A and B. A string S of length 3 represents which company operates each station. If S_i is `A`, Company A operates... | instruction | 0 | 23,576 | 1 | 47,152 |
"Correct Solution:
```
S = input()
print('Yes' if len(set(S)) > 1 else 'No')
``` | output | 1 | 23,576 | 1 | 47,153 |
Provide a correct Python 3 solution for this coding contest problem.
In AtCoder City, there are three stations numbered 1, 2, and 3.
Each of these stations is operated by one of the two railway companies, A and B. A string S of length 3 represents which company operates each station. If S_i is `A`, Company A operates... | instruction | 0 | 23,577 | 1 | 47,154 |
"Correct Solution:
```
S = input()
st = set(S)
print('Yes' if len(st)==2 else 'No')
``` | output | 1 | 23,577 | 1 | 47,155 |
Provide a correct Python 3 solution for this coding contest problem.
In AtCoder City, there are three stations numbered 1, 2, and 3.
Each of these stations is operated by one of the two railway companies, A and B. A string S of length 3 represents which company operates each station. If S_i is `A`, Company A operates... | instruction | 0 | 23,578 | 1 | 47,156 |
"Correct Solution:
```
S = input()
print("Yes" if len(list(set(S))) == 2 else "No")
``` | output | 1 | 23,578 | 1 | 47,157 |
Provide a correct Python 3 solution for this coding contest problem.
In AtCoder City, there are three stations numbered 1, 2, and 3.
Each of these stations is operated by one of the two railway companies, A and B. A string S of length 3 represents which company operates each station. If S_i is `A`, Company A operates... | instruction | 0 | 23,579 | 1 | 47,158 |
"Correct Solution:
```
print(' NYoe s'[len(set(input()))::2])
``` | output | 1 | 23,579 | 1 | 47,159 |
Provide a correct Python 3 solution for this coding contest problem.
In AtCoder City, there are three stations numbered 1, 2, and 3.
Each of these stations is operated by one of the two railway companies, A and B. A string S of length 3 represents which company operates each station. If S_i is `A`, Company A operates... | instruction | 0 | 23,580 | 1 | 47,160 |
"Correct Solution:
```
x = set(input())
print('No' if len(x)==1 else 'Yes')
``` | output | 1 | 23,580 | 1 | 47,161 |
Provide a correct Python 3 solution for this coding contest problem.
In AtCoder City, there are three stations numbered 1, 2, and 3.
Each of these stations is operated by one of the two railway companies, A and B. A string S of length 3 represents which company operates each station. If S_i is `A`, Company A operates... | instruction | 0 | 23,581 | 1 | 47,162 |
"Correct Solution:
```
print('Yes') if len(set(input()))==2 else\
print('No')
``` | output | 1 | 23,581 | 1 | 47,163 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
In AtCoder City, there are three stations numbered 1, 2, and 3.
Each of these stations is operated by one of the two railway companies, A and B. A string S of length 3 represents which company ... | instruction | 0 | 23,582 | 1 | 47,164 |
Yes | output | 1 | 23,582 | 1 | 47,165 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
In AtCoder City, there are three stations numbered 1, 2, and 3.
Each of these stations is operated by one of the two railway companies, A and B. A string S of length 3 represents which company ... | instruction | 0 | 23,583 | 1 | 47,166 |
Yes | output | 1 | 23,583 | 1 | 47,167 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
In AtCoder City, there are three stations numbered 1, 2, and 3.
Each of these stations is operated by one of the two railway companies, A and B. A string S of length 3 represents which company ... | instruction | 0 | 23,584 | 1 | 47,168 |
Yes | output | 1 | 23,584 | 1 | 47,169 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
In AtCoder City, there are three stations numbered 1, 2, and 3.
Each of these stations is operated by one of the two railway companies, A and B. A string S of length 3 represents which company ... | instruction | 0 | 23,585 | 1 | 47,170 |
Yes | output | 1 | 23,585 | 1 | 47,171 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
In AtCoder City, there are three stations numbered 1, 2, and 3.
Each of these stations is operated by one of the two railway companies, A and B. A string S of length 3 represents which company ... | instruction | 0 | 23,586 | 1 | 47,172 |
No | output | 1 | 23,586 | 1 | 47,173 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
In AtCoder City, there are three stations numbered 1, 2, and 3.
Each of these stations is operated by one of the two railway companies, A and B. A string S of length 3 represents which company ... | instruction | 0 | 23,587 | 1 | 47,174 |
No | output | 1 | 23,587 | 1 | 47,175 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
In AtCoder City, there are three stations numbered 1, 2, and 3.
Each of these stations is operated by one of the two railway companies, A and B. A string S of length 3 represents which company ... | instruction | 0 | 23,588 | 1 | 47,176 |
No | output | 1 | 23,588 | 1 | 47,177 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
In AtCoder City, there are three stations numbered 1, 2, and 3.
Each of these stations is operated by one of the two railway companies, A and B. A string S of length 3 represents which company ... | instruction | 0 | 23,589 | 1 | 47,178 |
No | output | 1 | 23,589 | 1 | 47,179 |
Provide a correct Python 3 solution for this coding contest problem.
Travelling by train is fun and exciting. But more than that indeed. Young challenging boys often tried to purchase the longest single tickets and to single ride the longest routes of various railway systems. Route planning was like solving puzzles. H... | instruction | 0 | 23,772 | 1 | 47,544 |
"Correct Solution:
```
# AOJ 1108: A Long Ride on a Railway
# Python3 2018.7.14 bal4u
def combi(k, a, w):
global len, ans
for b in range(1, n+1):
if b == a: continue
for i in range(m):
if not f[i] and ((tbl[i][0] == a and tbl[i][1] == b) or
(tbl[i][0] == b and tbl[i][1] == a)):
f[i] = ... | output | 1 | 23,772 | 1 | 47,545 |
Provide a correct Python 3 solution for this coding contest problem.
Problem F Pizza Delivery
Alyssa is a college student, living in New Tsukuba City. All the streets in the city are one-way. A new social experiment starting tomorrow is on alternative traffic regulation reversing the one-way directions of street sect... | instruction | 0 | 23,774 | 1 | 47,548 |
"Correct Solution:
```
from heapq import heappush, heappop
from collections import deque
import sys
sys.setrecursionlimit(10**6)
n, m = map(int, input().split())
E = []
G = [[] for i in range(n)]
RG = [[] for i in range(n)]
for i in range(m):
a, b, c = map(int, input().split())
E.append((a-1, b-1, c))
G[a-1... | output | 1 | 23,774 | 1 | 47,549 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Problem F Pizza Delivery
Alyssa is a college student, living in New Tsukuba City. All the streets in the city are one-way. A new social experiment starting tomorrow is on alternative traffic re... | instruction | 0 | 23,775 | 1 | 47,550 |
No | output | 1 | 23,775 | 1 | 47,551 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Problem F Pizza Delivery
Alyssa is a college student, living in New Tsukuba City. All the streets in the city are one-way. A new social experiment starting tomorrow is on alternative traffic re... | instruction | 0 | 23,776 | 1 | 47,552 |
No | output | 1 | 23,776 | 1 | 47,553 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Problem F Pizza Delivery
Alyssa is a college student, living in New Tsukuba City. All the streets in the city are one-way. A new social experiment starting tomorrow is on alternative traffic re... | instruction | 0 | 23,777 | 1 | 47,554 |
No | output | 1 | 23,777 | 1 | 47,555 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Problem F Pizza Delivery
Alyssa is a college student, living in New Tsukuba City. All the streets in the city are one-way. A new social experiment starting tomorrow is on alternative traffic re... | instruction | 0 | 23,778 | 1 | 47,556 |
No | output | 1 | 23,778 | 1 | 47,557 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The MST (Meaningless State Team) company won another tender for an important state reform in Berland.
There are n cities in Berland, some pairs of the cities are connected by roads. Each road h... | instruction | 0 | 23,936 | 1 | 47,872 |
No | output | 1 | 23,936 | 1 | 47,873 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The MST (Meaningless State Team) company won another tender for an important state reform in Berland.
There are n cities in Berland, some pairs of the cities are connected by roads. Each road h... | instruction | 0 | 23,937 | 1 | 47,874 |
No | output | 1 | 23,937 | 1 | 47,875 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The MST (Meaningless State Team) company won another tender for an important state reform in Berland.
There are n cities in Berland, some pairs of the cities are connected by roads. Each road h... | instruction | 0 | 23,938 | 1 | 47,876 |
No | output | 1 | 23,938 | 1 | 47,877 |
Provide tags and a correct Python 3 solution for this coding contest problem.
There are n + 2 towns located on a coordinate line, numbered from 0 to n + 1. The i-th town is located at the point i.
You build a radio tower in each of the towns 1, 2, ..., n with probability 1/2 (these events are independent). After that... | instruction | 0 | 24,000 | 1 | 48,000 |
Tags: combinatorics, dp, math
Correct Solution:
```
n = int(input())
dp = [1, 1]
for i in range(n - 2):
dp.append(dp[-1] + dp[-2])
dp = dp[1:]
x = dp[-1]
m = 998244353
y = pow(2, n, m)
y_inv = pow(y,m-2,m)
ans = (x * y_inv) % m
print(ans)
``` | output | 1 | 24,000 | 1 | 48,001 |
Provide tags and a correct Python 3 solution for this coding contest problem.
There are n + 2 towns located on a coordinate line, numbered from 0 to n + 1. The i-th town is located at the point i.
You build a radio tower in each of the towns 1, 2, ..., n with probability 1/2 (these events are independent). After that... | instruction | 0 | 24,001 | 1 | 48,002 |
Tags: combinatorics, dp, math
Correct Solution:
```
n=int(input())
mod=998244353
a,b=0,1
for i in range(n):
a,b=b,a+b
if b>mod:b%=mod
fib=a
y=pow(pow(2,n,mod), mod-2, mod)
print((fib*y)%mod)
``` | output | 1 | 24,001 | 1 | 48,003 |
Provide tags and a correct Python 3 solution for this coding contest problem.
There are n + 2 towns located on a coordinate line, numbered from 0 to n + 1. The i-th town is located at the point i.
You build a radio tower in each of the towns 1, 2, ..., n with probability 1/2 (these events are independent). After that... | instruction | 0 | 24,002 | 1 | 48,004 |
Tags: combinatorics, dp, math
Correct Solution:
```
import sys
input = sys.stdin.readline
n=int(input())
DP=[0]*(n+5)
SUM=[0]*(n+5)
SUM[0]=1
mod = 998244353
for i in range(n):
SUM[i]=(SUM[i]+SUM[i-2])%mod
DP[i]=SUM[i]
SUM[i+1]=DP[i]
print(DP[n-1]*pow(pow(2,n,mod),mod-2,mod)%mod)
``` | output | 1 | 24,002 | 1 | 48,005 |
Provide tags and a correct Python 3 solution for this coding contest problem.
There are n + 2 towns located on a coordinate line, numbered from 0 to n + 1. The i-th town is located at the point i.
You build a radio tower in each of the towns 1, 2, ..., n with probability 1/2 (these events are independent). After that... | instruction | 0 | 24,003 | 1 | 48,006 |
Tags: combinatorics, dp, math
Correct Solution:
```
# Ну давай, давай, ломай моё решение...
def fib(n):
f = [1, 1]
for i in range(2, n):
f.append(add(f[i - 1], f[i - 2]))
return f[n - 1]
def mul(a, b):
return a * b % 998244353
def add(a, b):
a += b
while a >= 998244353:
a -= 9... | output | 1 | 24,003 | 1 | 48,007 |
Provide tags and a correct Python 3 solution for this coding contest problem.
There are n + 2 towns located on a coordinate line, numbered from 0 to n + 1. The i-th town is located at the point i.
You build a radio tower in each of the towns 1, 2, ..., n with probability 1/2 (these events are independent). After that... | instruction | 0 | 24,004 | 1 | 48,008 |
Tags: combinatorics, dp, math
Correct Solution:
```
MOD = 998244353
class ModInt:
def __init__(self, x):
self.x = x % MOD
def __str__(self):
return str(self.x)
__repr__ = __str__
def __add__(self, other):
return (
ModInt(self.x + other.x) if isinstance(other, ModInt) else
ModInt(self... | output | 1 | 24,004 | 1 | 48,009 |
Provide tags and a correct Python 3 solution for this coding contest problem.
There are n + 2 towns located on a coordinate line, numbered from 0 to n + 1. The i-th town is located at the point i.
You build a radio tower in each of the towns 1, 2, ..., n with probability 1/2 (these events are independent). After that... | instruction | 0 | 24,005 | 1 | 48,010 |
Tags: combinatorics, dp, math
Correct Solution:
```
M = 998244353
n = int(input())
F = [1,1,1]
for i in range(n-2):F.append((F[-1] + F[-2]) % M)
print((F[-1] * pow(2, M-n-1, M))%M)
``` | output | 1 | 24,005 | 1 | 48,011 |
Provide tags and a correct Python 3 solution for this coding contest problem.
There are n + 2 towns located on a coordinate line, numbered from 0 to n + 1. The i-th town is located at the point i.
You build a radio tower in each of the towns 1, 2, ..., n with probability 1/2 (these events are independent). After that... | instruction | 0 | 24,006 | 1 | 48,012 |
Tags: combinatorics, dp, math
Correct Solution:
```
import io,os
from math import gcd
#input = io.BytesIO(os.read(0,os.fstat(0).st_size)).readline
M = 998244353
def inv(a):
return pow(a, M-2, M)
N = int(input())
fact = [0 for _ in range(N)]
fact[0] = acc = 1
finv = [0 for _ in range(N)]
finv[0] = accinv = 1
def mo... | output | 1 | 24,006 | 1 | 48,013 |
Provide tags and a correct Python 3 solution for this coding contest problem.
There are n + 2 towns located on a coordinate line, numbered from 0 to n + 1. The i-th town is located at the point i.
You build a radio tower in each of the towns 1, 2, ..., n with probability 1/2 (these events are independent). After that... | instruction | 0 | 24,007 | 1 | 48,014 |
Tags: combinatorics, dp, math
Correct Solution:
```
m = 998244353
n = int(input())
def fib(n):
F = [[1, 1],
[1, 0]]
if (n == 0):
return 0
power(F, n - 1)
return F[0][0]
def multiply(F, M):
x = (F[0][0] * M[0][0] +
F[0][1] * M[1][0])... | output | 1 | 24,007 | 1 | 48,015 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
There are n + 2 towns located on a coordinate line, numbered from 0 to n + 1. The i-th town is located at the point i.
You build a radio tower in each of the towns 1, 2, ..., n with probability... | instruction | 0 | 24,008 | 1 | 48,016 |
Yes | output | 1 | 24,008 | 1 | 48,017 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
There are n + 2 towns located on a coordinate line, numbered from 0 to n + 1. The i-th town is located at the point i.
You build a radio tower in each of the towns 1, 2, ..., n with probability... | instruction | 0 | 24,009 | 1 | 48,018 |
Yes | output | 1 | 24,009 | 1 | 48,019 |
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