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 |
|---|---|---|---|---|---|
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Suppose you are performing the following algorithm. There is an array v_1, v_2, ..., v_n filled with zeroes at start. The following operation is applied to the array several times — at i-th step... | instruction | 0 | 37,851 | 12 | 75,702 |
Yes | output | 1 | 37,851 | 12 | 75,703 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Suppose you are performing the following algorithm. There is an array v_1, v_2, ..., v_n filled with zeroes at start. The following operation is applied to the array several times — at i-th step... | instruction | 0 | 37,852 | 12 | 75,704 |
No | output | 1 | 37,852 | 12 | 75,705 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Suppose you are performing the following algorithm. There is an array v_1, v_2, ..., v_n filled with zeroes at start. The following operation is applied to the array several times — at i-th step... | instruction | 0 | 37,853 | 12 | 75,706 |
No | output | 1 | 37,853 | 12 | 75,707 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Suppose you are performing the following algorithm. There is an array v_1, v_2, ..., v_n filled with zeroes at start. The following operation is applied to the array several times — at i-th step... | instruction | 0 | 37,854 | 12 | 75,708 |
No | output | 1 | 37,854 | 12 | 75,709 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Suppose you are performing the following algorithm. There is an array v_1, v_2, ..., v_n filled with zeroes at start. The following operation is applied to the array several times — at i-th step... | instruction | 0 | 37,855 | 12 | 75,710 |
No | output | 1 | 37,855 | 12 | 75,711 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given n integers a_1, a_2, ..., a_n, where n is odd. You are allowed to flip the sign of some (possibly all or none) of them. You wish to perform these flips in such a way that the following conditions hold:
1. At least (n - 1)/(2... | instruction | 0 | 37,877 | 12 | 75,754 |
Tags: constructive algorithms, math
Correct Solution:
```
def solve():
n = int(input())
a = list(map(int, input().split()))
for i in range(n):
if i % 2:
a[i] = abs(a[i])
else:
a[i] = -abs(a[i])
print(*a)
t = int(input())
for _ in range(t):
solve()
``` | output | 1 | 37,877 | 12 | 75,755 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given n integers a_1, a_2, ..., a_n, where n is odd. You are allowed to flip the sign of some (possibly all or none) of them. You wish to perform these flips in such a way that the following conditions hold:
1. At least (n - 1)/(2... | instruction | 0 | 37,878 | 12 | 75,756 |
Tags: constructive algorithms, math
Correct Solution:
```
for i in range(int(input())):
n=int(input())
a=list(map(int,input().split(' ')))
for i in range(n):
if i%2==0:
if a[i]<0:
a[i]=-a[i]
else:
if a[i]>0:
a[i]=-a[i]
for i in rang... | output | 1 | 37,878 | 12 | 75,757 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given n integers a_1, a_2, ..., a_n, where n is odd. You are allowed to flip the sign of some (possibly all or none) of them. You wish to perform these flips in such a way that the following conditions hold:
1. At least (n - 1)/(2... | instruction | 0 | 37,879 | 12 | 75,758 |
Tags: constructive algorithms, math
Correct Solution:
```
t = int(input())
for z in range(t):
n = int(input())
s = list(map(int, input().split()))
for i in range(n):
if (i % 2):
s[i] = -abs(s[i])
else:
s[i] = abs(s[i])
print(" ".join(map(str,s)))
``` | output | 1 | 37,879 | 12 | 75,759 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given n integers a_1, a_2, ..., a_n, where n is odd. You are allowed to flip the sign of some (possibly all or none) of them. You wish to perform these flips in such a way that the following conditions hold:
1. At least (n - 1)/(2... | instruction | 0 | 37,880 | 12 | 75,760 |
Tags: constructive algorithms, math
Correct Solution:
```
for _ in range(int(input())):
n = int(input())
arr = list(map(int, input().split()))
i = 1
for j in range(n):
arr[j] = abs(arr[j])*i
i = -i
print(*arr)
``` | output | 1 | 37,880 | 12 | 75,761 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given n integers a_1, a_2, ..., a_n, where n is odd. You are allowed to flip the sign of some (possibly all or none) of them. You wish to perform these flips in such a way that the following conditions hold:
1. At least (n - 1)/(2... | instruction | 0 | 37,881 | 12 | 75,762 |
Tags: constructive algorithms, math
Correct Solution:
```
if __name__== "__main__":
for _ in range(int(input())):
n = int(input())
a = list(map(int, input().split()))
for i in range(1, n, 2):
if (a[i] - a[i-1] >= 0) == (a[i + 1] - a[i] >= 0):
a[i] = -a[i]
... | output | 1 | 37,881 | 12 | 75,763 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given n integers a_1, a_2, ..., a_n, where n is odd. You are allowed to flip the sign of some (possibly all or none) of them. You wish to perform these flips in such a way that the following conditions hold:
1. At least (n - 1)/(2... | instruction | 0 | 37,882 | 12 | 75,764 |
Tags: constructive algorithms, math
Correct Solution:
```
'''
t = int(input())
for p in range(t):
n,k = map(int,input().split())
s = '0'*k + input() + '0'*k
print(s)
s = s.split('1')
print(s)
ans = 0
for i in s:
ans+=max((len(i)-k)//(k+1),0)
print(ans)
'''
'''
for _ in range(int(... | output | 1 | 37,882 | 12 | 75,765 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given n integers a_1, a_2, ..., a_n, where n is odd. You are allowed to flip the sign of some (possibly all or none) of them. You wish to perform these flips in such a way that the following conditions hold:
1. At least (n - 1)/(2... | instruction | 0 | 37,883 | 12 | 75,766 |
Tags: constructive algorithms, math
Correct Solution:
```
t = int(input())
for _ in range(t):
n = int(input())
a = list(map(int, input().split()))
for i in range(n):
print(abs(a[i])*((-1)**i), end=" ")
``` | output | 1 | 37,883 | 12 | 75,767 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given n integers a_1, a_2, ..., a_n, where n is odd. You are allowed to flip the sign of some (possibly all or none) of them. You wish to perform these flips in such a way that the following conditions hold:
1. At least (n - 1)/(2... | instruction | 0 | 37,884 | 12 | 75,768 |
Tags: constructive algorithms, math
Correct Solution:
```
from sys import stdin
input = stdin.buffer.readline
for _ in range(int(input())):
n = int(input())
*a, = map(int, input().split())
print(*[[1, -1][i & 1] * abs(a[i]) for i in range(n)])
``` | output | 1 | 37,884 | 12 | 75,769 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given 2 arrays a and b, both of size n. You can swap two elements in b at most once (or leave it as it is), and you are required to minimize the value $$$∑_{i}|a_{i}-b_{i}|.$$$
Find the minimum possible value of this sum.
Input
Th... | instruction | 0 | 37,945 | 12 | 75,890 |
Tags: brute force, constructive algorithms, data structures, sortings
Correct Solution:
```
n = int(input())
a = [int(val) for val in input().split()]
b = [int(val) for val in input().split()]
def get_overlap(x, y):
return max(min(x[1], y[1]) - max(x[0], y[0]), 0)
x = []
y = []
for i in range(n):
if a[i] < b[i]:
... | output | 1 | 37,945 | 12 | 75,891 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given 2 arrays a and b, both of size n. You can swap two elements in b at most once (or leave it as it is), and you are required to minimize the value $$$∑_{i}|a_{i}-b_{i}|.$$$
Find the minimum possible value of this sum.
Input
Th... | instruction | 0 | 37,946 | 12 | 75,892 |
Tags: brute force, constructive algorithms, data structures, sortings
Correct Solution:
```
# F. Swapping Problem
n = int(input())
a = [int(val) for val in input().split()]
b = [int(val) for val in input().split()]
# step 1, partition it
s = []
t = []
for i in range(n):
if a[i] < b[i]:
# we are going to use tup... | output | 1 | 37,946 | 12 | 75,893 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given 2 arrays a and b, both of size n. You can swap two elements in b at most once (or leave it as it is), and you are required to minimize the value $$$∑_{i}|a_{i}-b_{i}|.$$$
Find the minimum possible value of this sum.
Input
Th... | instruction | 0 | 37,947 | 12 | 75,894 |
Tags: brute force, constructive algorithms, data structures, sortings
Correct Solution:
```
# Codeforces - 1513-F (https://codeforces.com/problemset/problem/1513/F)
n = int(input())
a = [int(val) for val in input().split()]
b = [int(val) for val in input().split()]
# step 1: partition
s = []
t = []
for i in range(n)... | output | 1 | 37,947 | 12 | 75,895 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given 2 arrays a and b, both of size n. You can swap two elements in b at most once (or leave it as it is), and you are required to minimize the value $$$∑_{i}|a_{i}-b_{i}|.$$$
Find the minimum possible value of this sum.
Input
Th... | instruction | 0 | 37,948 | 12 | 75,896 |
Tags: brute force, constructive algorithms, data structures, sortings
Correct Solution:
```
import sys
from sys import stdin
n = int(stdin.readline())
lis = []
a = list(map(int,stdin.readline().split()))
b = list(map(int,stdin.readline().split()))
allsum = 0
for i in range(n):
allsum += abs(a[i] - b[i])
ans = ... | output | 1 | 37,948 | 12 | 75,897 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given 2 arrays a and b, both of size n. You can swap two elements in b at most once (or leave it as it is), and you are required to minimize the value $$$∑_{i}|a_{i}-b_{i}|.$$$
Find the minimum possible value of this sum.
Input
Th... | instruction | 0 | 37,949 | 12 | 75,898 |
Tags: brute force, constructive algorithms, data structures, sortings
Correct Solution:
```
n = int(input())
a = [int(val) for val in input().split()]
b = [int(val) for val in input().split()]
s = []
t = []
for i in range(n):
if a[i] < b[i]:
s.append((a[i], b[i]))
elif a[i] > b[i]:
t.append((b[... | output | 1 | 37,949 | 12 | 75,899 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given 2 arrays a and b, both of size n. You can swap two elements in b at most once (or leave it as it is), and you are required to minimize the value $$$∑_{i}|a_{i}-b_{i}|.$$$
Find the minimum possible value of this sum.
Input
Th... | instruction | 0 | 37,950 | 12 | 75,900 |
Tags: brute force, constructive algorithms, data structures, sortings
Correct Solution:
```
n = int(input())
list2 = []
a = list(map(int,input().split()))
b = list(map(int,input().split()))
allsum = 0
for i in range(n):
allsum += abs(a[i] - b[i])
mas = 0
list2 = []
for i in range(n):
if a[i] < b[i]:
lis... | output | 1 | 37,950 | 12 | 75,901 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given 2 arrays a and b, both of size n. You can swap two elements in b at most once (or leave it as it is), and you are required to minimize the value $$$∑_{i}|a_{i}-b_{i}|.$$$
Find the minimum possible value of this sum.
Input
Th... | instruction | 0 | 37,951 | 12 | 75,902 |
Tags: brute force, constructive algorithms, data structures, sortings
Correct Solution:
```
n = int(input());lis = [];a = list(map(int,input().split()));b = list(map(int,input().split()));allsum = sum([abs(a[i] - b[i]) for i in range(n)]);ans = 0;lis = []
for i in range(n):
if a[i] < b[i]: lis.append( (a[i],... | output | 1 | 37,951 | 12 | 75,903 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given 2 arrays a and b, both of size n. You can swap two elements in b at most once (or leave it as it is), and you are required to minimize the value $$$∑_{i}|a_{i}-b_{i}|.$$$
Find the minimum possible value of this sum.
Input
Th... | instruction | 0 | 37,952 | 12 | 75,904 |
Tags: brute force, constructive algorithms, data structures, sortings
Correct Solution:
```
# F. Swapping Problem
n = int(input())
a = [int(val) for val in input().split()]
b = [int(val) for val in input().split()]
# step 1: partition
s = []
t = []
for i in range(n):
if a[i] < b[i]:
s.append((a[i], b[i]))
eli... | output | 1 | 37,952 | 12 | 75,905 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given 2 arrays a and b, both of size n. You can swap two elements in b at most once (or leave it as it is), and you are required to minimize the value $$$∑_{i}|a_{i}-b_{i}|.$$$
Find the... | instruction | 0 | 37,953 | 12 | 75,906 |
Yes | output | 1 | 37,953 | 12 | 75,907 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given 2 arrays a and b, both of size n. You can swap two elements in b at most once (or leave it as it is), and you are required to minimize the value $$$∑_{i}|a_{i}-b_{i}|.$$$
Find the... | instruction | 0 | 37,954 | 12 | 75,908 |
Yes | output | 1 | 37,954 | 12 | 75,909 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given 2 arrays a and b, both of size n. You can swap two elements in b at most once (or leave it as it is), and you are required to minimize the value $$$∑_{i}|a_{i}-b_{i}|.$$$
Find the... | instruction | 0 | 37,955 | 12 | 75,910 |
No | output | 1 | 37,955 | 12 | 75,911 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given 2 arrays a and b, both of size n. You can swap two elements in b at most once (or leave it as it is), and you are required to minimize the value $$$∑_{i}|a_{i}-b_{i}|.$$$
Find the... | instruction | 0 | 37,956 | 12 | 75,912 |
No | output | 1 | 37,956 | 12 | 75,913 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given 2 arrays a and b, both of size n. You can swap two elements in b at most once (or leave it as it is), and you are required to minimize the value $$$∑_{i}|a_{i}-b_{i}|.$$$
Find the... | instruction | 0 | 37,957 | 12 | 75,914 |
No | output | 1 | 37,957 | 12 | 75,915 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given 2 arrays a and b, both of size n. You can swap two elements in b at most once (or leave it as it is), and you are required to minimize the value $$$∑_{i}|a_{i}-b_{i}|.$$$
Find the... | instruction | 0 | 37,958 | 12 | 75,916 |
No | output | 1 | 37,958 | 12 | 75,917 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Ivan has an array consisting of n different integers. He decided to reorder all elements in increasing order. Ivan loves merge sort so he decided to represent his array with one or several increasing sequences which he then plans to merge in... | instruction | 0 | 38,248 | 12 | 76,496 |
Tags: binary search, data structures
Correct Solution:
```
n = int(input())
a = []
arr = list(map(int, input().split()))
for i in range(n):
if len(a) == 0:
a.append([arr[i]])
continue
el = arr[i]
l, r = 0, len(a) - 1
while r - l >= 1:
m = (l + r) // 2
if el > a[m][-1]:
... | output | 1 | 38,248 | 12 | 76,497 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Ivan has an array consisting of n different integers. He decided to reorder all elements in increasing order. Ivan loves merge sort so he decided to represent his array with one or several increasing sequences which he then plans to merge in... | instruction | 0 | 38,249 | 12 | 76,498 |
Tags: binary search, data structures
Correct Solution:
```
n = int(input())
a = list(map(int,input().split()))
groups = []
groupTail = []
for elem in a:
if not groups:
groups.append([elem])
groupTail.append(elem)
else:
l = 0
r = len(groups)
while l <= r:
m = ... | output | 1 | 38,249 | 12 | 76,499 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Ivan has an array consisting of n different integers. He decided to reorder all elements in increasing order. Ivan loves merge sort so he decided to represent his array with one or several increasing sequences which he then plans to merge in... | instruction | 0 | 38,250 | 12 | 76,500 |
Tags: binary search, data structures
Correct Solution:
```
n = int(input())
from bisect import bisect_left
a = list(map(int, input().split()))
ss = []
ms = []
for i in range(n):
k = a[i]
ind = bisect_left(ms, -k)
if ind == len(ms):
ss.append([])
ms.append(0)
ss[ind].append(k)
ms[in... | output | 1 | 38,250 | 12 | 76,501 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Ivan has an array consisting of n different integers. He decided to reorder all elements in increasing order. Ivan loves merge sort so he decided to represent his array with one or several increasing sequences which he then plans to merge in... | instruction | 0 | 38,251 | 12 | 76,502 |
Tags: binary search, data structures
Correct Solution:
```
"""
http://codeforces.com/contest/847/problem/B
5
1 3 2 5 4 should output
1 3 5
2 4
"""
input()
numbers = [int(i) for i in input().split()]
runs = [[numbers[0]]]
for n in numbers[1:]:
if n < runs[-1][-1]:
runs.append([n])
continue
lo =... | output | 1 | 38,251 | 12 | 76,503 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Ivan has an array consisting of n different integers. He decided to reorder all elements in increasing order. Ivan loves merge sort so he decided to represent his array with one or several increasing sequences which he then plans to merge in... | instruction | 0 | 38,252 | 12 | 76,504 |
Tags: binary search, data structures
Correct Solution:
```
from bisect import bisect_left
n = int(input())
A = list(map(int,input().split()))
max_vals = []
result_lists = []
for i in range(n):
val = -A[i]
idx = bisect_left(max_vals,val)
if idx == len(max_vals):
max_vals.append(0)
result_l... | output | 1 | 38,252 | 12 | 76,505 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Ivan has an array consisting of n different integers. He decided to reorder all elements in increasing order. Ivan loves merge sort so he decided to represent his array with one or several increasing sequences which he then plans to merge in... | instruction | 0 | 38,253 | 12 | 76,506 |
Tags: binary search, data structures
Correct Solution:
```
"""
http://codeforces.com/contest/847/problem/B
5
1 3 2 5 4 should output
1 3 5
2 4
"""
input()
numbers = [int(i) for i in input().split()] # assumes all elements are distinct
runs = [[numbers[0]]]
for n in numbers[1:]:
if n < runs[-1][-1]:
runs.a... | output | 1 | 38,253 | 12 | 76,507 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Ivan has an array consisting of n different integers. He decided to reorder all elements in increasing order. Ivan loves merge sort so he decided to represent his array with one or several increasing sequences which he then plans to merge in... | instruction | 0 | 38,254 | 12 | 76,508 |
Tags: binary search, data structures
Correct Solution:
```
# aadiupadhyay
import os.path
from math import gcd, floor, ceil
from collections import *
import sys
mod = 1000000007
INF = float('inf')
def st(): return list(sys.stdin.readline().strip())
def li(): return list(map(int, sys.stdin.readline().split()))
def mp(): ... | output | 1 | 38,254 | 12 | 76,509 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Ivan has an array consisting of n different integers. He decided to reorder all elements in increasing order. Ivan loves merge sort so he decided to represent his array with one or several increasing sequences which he then plans to merge in... | instruction | 0 | 38,255 | 12 | 76,510 |
Tags: binary search, data structures
Correct Solution:
```
n=int(input())
arr=list(map(int,input().split()))
ans=[0]*1
ans[0]=[]
ans[0].append(arr[0])
for i in range(1,n,1):
lo,hi=0,len(ans)
idx=-1
while(lo<=hi):
mid=(lo+hi)//2
#print(lo,hi,i)
if lo!=len(ans) and ans[mid][len(ans[mid])-1]<arr[i]:
idx=mid
... | output | 1 | 38,255 | 12 | 76,511 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Ivan has an array consisting of n different integers. He decided to reorder all elements in increasing order. Ivan loves merge sort so he decided to represent his array with one or several incre... | instruction | 0 | 38,256 | 12 | 76,512 |
Yes | output | 1 | 38,256 | 12 | 76,513 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Ivan has an array consisting of n different integers. He decided to reorder all elements in increasing order. Ivan loves merge sort so he decided to represent his array with one or several incre... | instruction | 0 | 38,257 | 12 | 76,514 |
Yes | output | 1 | 38,257 | 12 | 76,515 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Ivan has an array consisting of n different integers. He decided to reorder all elements in increasing order. Ivan loves merge sort so he decided to represent his array with one or several incre... | instruction | 0 | 38,258 | 12 | 76,516 |
Yes | output | 1 | 38,258 | 12 | 76,517 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Ivan has an array consisting of n different integers. He decided to reorder all elements in increasing order. Ivan loves merge sort so he decided to represent his array with one or several incre... | instruction | 0 | 38,259 | 12 | 76,518 |
Yes | output | 1 | 38,259 | 12 | 76,519 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Ivan has an array consisting of n different integers. He decided to reorder all elements in increasing order. Ivan loves merge sort so he decided to represent his array with one or several incre... | instruction | 0 | 38,260 | 12 | 76,520 |
No | output | 1 | 38,260 | 12 | 76,521 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Ivan has an array consisting of n different integers. He decided to reorder all elements in increasing order. Ivan loves merge sort so he decided to represent his array with one or several incre... | instruction | 0 | 38,261 | 12 | 76,522 |
No | output | 1 | 38,261 | 12 | 76,523 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Ivan has an array consisting of n different integers. He decided to reorder all elements in increasing order. Ivan loves merge sort so he decided to represent his array with one or several incre... | instruction | 0 | 38,262 | 12 | 76,524 |
No | output | 1 | 38,262 | 12 | 76,525 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Ivan has an array consisting of n different integers. He decided to reorder all elements in increasing order. Ivan loves merge sort so he decided to represent his array with one or several incre... | instruction | 0 | 38,263 | 12 | 76,526 |
No | output | 1 | 38,263 | 12 | 76,527 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given an array a of length n. We define fa the following way:
* Initially fa = 0, M = 1;
* for every 2 ≤ i ≤ n if aM < ai then we set fa = fa + aM and then set M = i.
Calculate the sum of fa over all n! permutations of the ... | instruction | 0 | 38,303 | 12 | 76,606 |
Tags: combinatorics, math
Correct Solution:
```
import atexit
import io
import sys
# IO Buffering
_INPUT_LINES = sys.stdin.read().splitlines()
input = iter(_INPUT_LINES).__next__
_OUTPUT_BUFFER = io.StringIO()
sys.stdout = _OUTPUT_BUFFER
@atexit.register
def write():
sys.__stdout__.write(_OUTPUT_BUFFER.getvalue(... | output | 1 | 38,303 | 12 | 76,607 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given an array a of length n. We define fa the following way:
* Initially fa = 0, M = 1;
* for every 2 ≤ i ≤ n if aM < ai then we set fa = fa + aM and then set M = i.
Calculate the sum of fa over all n! permutations of the ... | instruction | 0 | 38,304 | 12 | 76,608 |
Tags: combinatorics, math
Correct Solution:
```
mod = 10**9+7
n = int(input())
a = sorted(map(int, input().split()))
ma = max(a)
prev = -1
smaller = 0
cur = 0
total = 0
for x in a:
if x == ma:
continue
if x == prev:
cur += 1
else:
smaller += cur
cur = 1
prev =... | output | 1 | 38,304 | 12 | 76,609 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given an array a of length n. We define fa the following way:
* Initially fa = 0, M = 1;
* for every 2 ≤ i ≤ n if aM < ai then we set fa = fa + aM and then set M = i.
Calculate the sum of fa over all n! permutations of the ... | instruction | 0 | 38,305 | 12 | 76,610 |
Tags: combinatorics, math
Correct Solution:
```
import sys
from collections import Counter
n = int(input())
a = list(map(int, input().split()))
cnt = Counter(a)
ans = 0
mod = 10**9 + 7
b = sorted(cnt.keys(), reverse=True)
m = cnt[b[0]]
for key in b[1:]:
m += cnt[key]
ans = (ans + pow(m, mod-2, mod) * key * c... | output | 1 | 38,305 | 12 | 76,611 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given an array a of length n. We define fa the following way:
* Initially fa = 0, M = 1;
* for every 2 ≤ i ≤ n if aM < ai then we set fa = fa + aM and then set M = i.
Calculate the sum of fa over all n! permutations of the ... | instruction | 0 | 38,306 | 12 | 76,612 |
Tags: combinatorics, math
Correct Solution:
```
import sys,math,itertools
from collections import Counter,deque,defaultdict
from bisect import bisect_left,bisect_right
from heapq import heappop,heappush,heapify, nlargest
from copy import deepcopy
mod = 10**9+7
INF = float('inf')
def inp(): return int(sys.stdin.readlin... | output | 1 | 38,306 | 12 | 76,613 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given an array a of length n. We define fa the following way:
* Initially fa = 0, M = 1;
* for every 2 ≤ i ≤ n if aM < ai then we set fa = fa + aM and then set M = i.
Calculate the sum of fa over all n! permutations of the ... | instruction | 0 | 38,307 | 12 | 76,614 |
Tags: combinatorics, math
Correct Solution:
```
def main():
f= [1]
for i in range(1,1000002):
f.append((f[-1] * i)%1000000007)
n = int(input())
a = sorted(int(x) for x in input().split())
sol = 0
j = 0
s = 1
sq = 1
for i in range(n - 1):
sq = sq * (n - ... | output | 1 | 38,307 | 12 | 76,615 |
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 of length n. We define fa the following way:
* Initially fa = 0, M = 1;
* for every 2 ≤ i ≤ n if aM < ai then we set fa = fa + aM and then set M = i.
Calculate... | instruction | 0 | 38,308 | 12 | 76,616 |
No | output | 1 | 38,308 | 12 | 76,617 |
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 of length n. We define fa the following way:
* Initially fa = 0, M = 1;
* for every 2 ≤ i ≤ n if aM < ai then we set fa = fa + aM and then set M = i.
Calculate... | instruction | 0 | 38,309 | 12 | 76,618 |
No | output | 1 | 38,309 | 12 | 76,619 |
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