qyliang/CodeNanoFix huggingface dataset:
Buggy code:
N,K=list(map(int,input().split()))
A=list(map(int,input().split()))
mod=10**9+7
b=0
f=0
for i in range(N):
    for j in range(i+1,N):
        if A[i]>A[j]:
            #print(i,",",j)
            f+=1
           
            
for i in range(N):
    for j in range(N):
        if i==j:
            continue
        if A[i]>A[j]:
            b+=1

ans=f*K
tmp=((K-1)*K)
ans+=((b*tmp)/2)
#ans = K * f + (b * K * (K - 1)) // 2
ans%=mod

print(ans)

Fixed code:
N,K=list(map(int,input().split()))
A=list(map(int,input().split()))
mod=10**9+7
b=0
f=0
for i in range(N):
    for j in range(i+1,N):
        if A[i]>A[j]:
            #print(i,",",j)
            f+=1
           
            
for i in range(N):
    for j in range(N):
        if i==j:
            continue
        if A[i]>A[j]:
            b+=1

#ans=f*K
#tmp=((K-1)*K)%mod
#ans+=((b*tmp)//2)%mod
ans = K * f + (b * K * (K - 1)) // 2
ans%=mod

print(ans)
Buggy code:
N,K=map(int,input().split())

A=list(map(int,input().split()))
L=[0]*N
R=[0]*N

for i in range(N):
    for j in range(N):
        if j<i and A[j]<A[i]:
            L[i]+=1
        if j>i and A[j]<A[i]:
            R[i]+=1
ans = 0
K1=((1+K)*K/2)%(10**9+7)
K2=(K*(K-1)/2)%(10**9+7)

for i in range(N):
    ans +=(R[i]*K1+L[i]*K2)%(10**9+7)

ans =ans%(10**9+7)

print(int(ans))



Fixed code:
N,K=map(int,input().split())

A=list(map(int,input().split()))
L=[0]*N
R=[0]*N

for i in range(N):
    for j in range(N):
        if j<i and A[j]<A[i]:
            L[i]+=1
        if j>i and A[j]<A[i]:
            R[i]+=1
ans = 0
K1=((1+K)*K//2)%(10**9+7)
K2=(K*(K-1)//2)%(10**9+7)

for i in range(N):
    ans +=(R[i]*K1+L[i]*K2)%(10**9+7)

ans =ans%(10**9+7)

print(int(ans))
Buggy code:
N, K = map(int, input().split())
A = list(map(int, input().split()))
mod = 10**9+7

q1 = 0
for i in range(N):
    for j in range(i, N):
        if A[i]>A[j]:
            q1 += 1
            q1 %= mod

q2 = 0
for i in range(N):
    for j in range(N):
        if A[i]>A[j]:
            q2 += 1
            q2 %= mod

ans = (q2 * (1/2 * (K-1) * K) + q1 * K) % mod
print(int(ans))

Fixed code:
N, K = map(int, input().split())
A = list(map(int, input().split()))
mod = 10**9+7

q1 = 0
for i in range(N):
    for j in range(i, N):
        if A[i]>A[j]:
            q1 += 1

q2 = 0
for i in range(N):
    for j in range(N):
        if A[i]>A[j]:
            q2 += 1

tmp1 = (K-1)*K//2 %mod * q2 %mod
tmp2 = q1*K%mod
ans = (tmp1 + tmp2)%mod
print(int(ans))
Buggy code:
mod=10**9+7
n,k=map(int,input().split())
a=list(map(int,input().split()))

cnt=0
res=0
for i in range(n):
    cnt=0
    for j in range(i+1,n):
        if a[i]>a[j]:
            cnt+=1
    res+=cnt*((k+1)*k)//2
    res%=mod

print(res)

Fixed code:
mod=10**9+7
n,k=map(int,input().split())
a=list(map(int,input().split()))
kk=k-1

cnt=0
res=0
for i in range(n):
    cnt=0
    rev=0

    for j in range(i+1,n):
        if a[i]>a[j]:
            cnt+=1
        if a[i]<a[j]:
            rev+=1
    res+=rev*((kk+1)*kk)//2
    res+=cnt*((k+1)*k)//2
    res%=mod

print(res)
Buggy code:
MOD = 10 ** 9 + 7
def add(a, b):
  return (a + b) % MOD
def sub(a, b):
  return (a - b) % MOD
def mul(a, b):
  return ((a % MOD) * (b % MOD)) % MOD
def div(a, b):
  return ( (a % MOD) * (power(b, MOD)) ) % MOD
def power(a, b):
  return pow(a, b, MOD)


n, k = map(int, input().split())
an = list(map(int, input().split()))
n1 = [0] * n
n2 = [0] * n
for i, v in enumerate(an):
  n1[i] = len([x for x in an[i+1:] if x < v])
  n2[i] = n1[i] + len([x for x in an[:i] if x < v])

cnt = 0
if k // 2 == 0:
  ks = mul(k-1, k//2)
else:
  ks = mul((k-1)//2, k)
for i in range(n):
  cnt = add(cnt, mul(n1[i], k))
  cnt = add(cnt, mul(n2[i], ks))
print(cnt)

Fixed code:
MOD = 10 ** 9 + 7
def add(a, b):
  return (a + b) % MOD
def sub(a, b):
  return (a - b) % MOD
def mul(a, b):
  return ((a % MOD) * (b % MOD)) % MOD
def div(a, b):
  return ( (a % MOD) * (power(b, MOD)) ) % MOD
def power(a, b):
  return pow(a, b, MOD)


n, k = map(int, input().split())
an = list(map(int, input().split()))
n1 = [0] * n
n2 = [0] * n
for i, v in enumerate(an):
  n1[i] = len([x for x in an[i+1:] if x < v])
  n2[i] = n1[i] + len([x for x in an[:i] if x < v])

cnt = 0
ks = (k-1) * k // 2
for i in range(n):
  cnt = add(cnt, mul(n1[i], k))
  cnt = add(cnt, mul(n2[i], ks))
print(cnt)
Buggy code:
N,K = map(int, input().split())
A = list(map(int,input().split()))
t = 0
for i in range(N):
  for j in range(N-i-1):
    if A[i] > A[j+i+1]:
      t += 1
T = t
u = 0
for i in range(N):
  for j in range(N):
    if A[i]>A[j]:
      u += 1
U = u
ans = int((T*K+U*K*(K-1)/2)%(10**9+7))
   
print(ans)

Fixed code:
N,K = map(int, input().split())
A = list(map(int,input().split()))
t = 0
for i in range(N-1):
  for j in range(N-i-1):
    if A[i] > A[j+i+1]:
      t += 1
u = 0
for i in range(N):
  for j in range(N):
    if A[i]>A[j]:
      u += 1
T = t%(10**9+7)
U = u%(10**9+7)
Z=K*(K-1)//2%(10**9+7)
Y=T*K%(10**9+7)
X=U*Z%(10**9+7)
ans = (Y+X)%(10**9+7)
   
print(ans)
Buggy code:
# coding: utf-8
# Your code here!
N,K=map(int,input().split())

A=list(map(int,input().split()))

A=A+A

count=[0]*2*N

for i in range(N):
    for j in range(i,2*N):
        if A[i]>A[j]:
            count[j]+=1
a=(sum(count[0:N]))
b=(sum(count[N:2*N]))
c=(int((a*K+b*K*(K-1)/2)))
print(c%(10**9+7))


Fixed code:
# coding: utf-8
# Your code here!
N,K=map(int,input().split())

A=list(map(int,input().split()))

A=A+A

count=[0]*2*N

for i in range(N):
    for j in range(i,2*N):
        if A[i]>A[j]:
            count[j]+=1
a=(sum(count[0:N]))
b=(sum(count[N:2*N]))
c=(int((a*K+b*K*(K-1)//2)))
print(c%(10**9+7))
Buggy code:
def main(n,k,a):

    mod = 10**9 + 7
    t1, t2 = 0, 0
    for i in range(n):
        for j in range(n):
            if a[i] > a[j]:
                t1 += 1
        for j in range(n - i):
            if a[i] > a[j + i]:
                t2 += 1
        count = t1 * k * (k - 1) / 2 % mod
        count += t2 * k % mod

    print(t1, t2)

    print(int(count % mod))


if __name__ == '__main__':
    n,k = map(int, input().split(' '))
    a = list(map(int, input().split(' ')))
    main(n,k,a)


Fixed code:
def main(n,k,a):

    mod = 10**9 + 7
    t1, t2 = 0, 0
    for i in range(n):
        for j in range(n):
            if a[i] > a[j]:
                t1 += 1
        for j in range(n - i - 1):
            if a[i] > a[j + i + 1]:
                t2 += 1

    count = (t1 * ((k * (k - 1)) // 2)) % mod
    count += (t2 * k) % mod
    print(int(count % mod))


if __name__ == '__main__':
    n, k = map(int, input().split(' '))
    a = list(map(int, input().split(' ')))
    main(n,k,a)
Buggy code:
n,k = map(int,input().split())
li = list(map(int,input().split()))
mod = 10**9 +7

ans_1 = 0
ans_2 = 0
for i in range(n-1):
  for j in range(i+1,n):
    if li[i] > li[j]:
      ans_1+= 1
for i in range(n):
  for j in range(n):
    if li[i] < li[j]:
      ans_2 += 1
ans = k*ans_1 + 0.5*k*(k-1)%mod*ans_2
print(ans_1)
print(ans_2)
print(ans%mod)

Fixed code:
n,k = map(int,input().split())
li = list(map(int,input().split()))
mod = 10**9 +7
 
ans_1 = 0
ans_2 = 0
for i in range(n):
  for j in range(i+1,n):
    if li[i] > li[j]:
      ans_1+= 1
for i in range(n):
  for j in range(n):
    if li[i] > li[j]:
      ans_2 += 1
ans = k*ans_1%mod + (k*(k-1)//2)%mod*ans_2%mod
print(int(ans%mod))
Buggy code:
N,K = map(int, input().split())
A = list(map(int,input().split()))

def souwa(num):
    if num % 2 == 0:
        return int((num+1) * (num/2))
    else:
        return int((num+1) * (num//2)) + ((num//2)+1)

ans = 0
for i in range(N):
    for i in range(i+1,N):
        print("a",i)
    buf1 = sum(A[i] > A[j] for j in range(i+1, N))
    buf2 = sum(A[i] > a for a in A)
    ans += (buf1 * K) + (buf2 * souwa(K-1))

print(ans % (10**9+7))

Fixed code:
N,K = map(int, input().split())
A = list(map(int,input().split()))

def souwa(num):
    if num % 2 == 0:
        return int((num+1) * (num/2))
    else:
        return int((num+1) * (num//2)) + ((num//2)+1)

ans = 0
buf1 = 0
buf2 = 0
for i in range(N):
    buf1 += sum(A[i] > A[j] for j in range(i+1, N))
    buf2 += sum(A[i] > a for a in A)

ans = (buf1 * K) + (buf2 * (K*(K-1)//2))
print(ans % (10**9+7))
Buggy code:
N, K = map(int, input().split())
a = list(map(int, input().split()))
cnt = 0
mod = 10 ** 9 + 7
for i in range(N):
    print(cnt)
    for j in range(N):
        if a[i] > a[j]:
            cnt += 1
ans = cnt * ((K - 1) * K) % mod // 2 % mod
for i in range(N - 1):
    for j in range(i + 1, N):
        if a[i] > a[j]:
            ans += K
print(ans % mod)

Fixed code:
N, K = map(int, input().split())
a = list(map(int, input().split()))
mod = 10 ** 9 + 7
two = (-1 * (mod//2)) % mod
cnt = 0
for i in range(N):
    for j in range(N):
        if a[i] > a[j]:
            cnt += 1
ans = cnt * (K - 1) * K * two % mod
for i in range(N - 1):
    for j in range(i + 1, N):
        if a[i] > a[j]:
            ans += K
print(ans % mod)
Buggy code:
N, K = map(int, input().split())
a = list(map(int, input().split()))
cnt = 0
mod = 10 ** 9 + 7
for i in range(N):
    #print(cnt)
    for j in range(N):
        if a[i] > a[j]:
            cnt += 1
ans = cnt * ((K - 1) * K) % mod * 500000004 % mod
for i in range(N - 1):
    for j in range(i + 1, N):
        if a[i] > a[j]:
            ans += K % mod
print(ans)

Fixed code:
N, K = map(int, input().split())
a = list(map(int, input().split()))
cnt = 0
mod = 10 ** 9 + 7
for i in range(N):
    #print(cnt)
    for j in range(N):
        if a[i] > a[j]:
            cnt += 1
ans = cnt * ((K - 1) * K) * 500000004 % mod
for i in range(N - 1):
    for j in range(i + 1, N):
        if a[i] > a[j]:
            ans += K % mod
print(ans % mod)
Buggy code:
N,K = (int(i) for i in input().split()) 
A = [int(i) for i in input().split()] 

mod = 10**9+7
ans = 0

for i in range(N):
	bs = [1 if g < A[i] else 0 for g in A]
	print(bs)
	ans += 0.5*(sum(bs[i:]) + sum(bs[:i]))*K*(K+1) - sum(bs[:i])*K
print(int(ans)%mod)

Fixed code:
N,K = (int(i) for i in input().split()) 
A = [int(i) for i in input().split()] 

mod = 10**9+7
ans = 0

for i in range(N):
	bs = [1 if g < A[i] else 0 for g in A]
	ans += (K+1)*K*sum(bs)//2 - sum(bs[:i])*K
print(int(ans)%mod)
Buggy code:
P = (10**9)+7
N,K = map(int,input().split())
A = list(map(int,input().split()))
res_p = 0
res_n = 0

for i in range(N):
    for j in range(i+1,N):
        if A[i]>A[j]:
            res_p += 1
        if A[-i-1]>A[-j-1]:
            res_n += 1
res = (K * res_p)
res += (res_p + res_n) * ((K * (K-1)) / 2) 


print(res % P)


Fixed code:
P = (10**9)+7
N,K = map(int,input().split())
A = list(map(int,input().split()))
res_p = 0
res_n = 0

for i in range(N):
    for j in range(i+1,N):
        if A[i]>A[j]:
            res_p += 1
        if A[-i-1]>A[-j-1]:
            res_n += 1
res = (K * res_p)
res += (res_p + res_n) * (K * (K-1) // 2)
print(int(res % P) )
Buggy code:
n,k=map(int,input().split())
A=list(map(int,input().split()))
ans=0
mod=10**9+7
for i in range(n):
    a=0
    b=0
    for j in range(min(i+1,n-1),n):
        if A[i]>A[j]:
            b+=1
    for j in range(i):
        if A[i]>A[j]:
            a+=1
    ans+=(b*k+(a+b)*k*(k-1)//2)%mod
print(ans)

Fixed code:
n,k=map(int,input().split())
A=list(map(int,input().split()))
ans=0
mod=10**9+7
for i in range(n):
    a=0
    b=0
    for j in range(min(i+1,n-1),n):
        if A[i]>A[j]:
            b+=1
    for j in range(i):
        if A[i]>A[j]:
            a+=1

    ans+=(b*k+(a+b)*k*(k-1)//2)
print(ans%mod)
Buggy code:
N,K=map(int,input().split())
A=list(map(int,input().split()))
ans=0
for i in range(N):
  count=0
  for j in range(i+1,N):
    if A[i]>A[j]:
      count+=1
  ans+=count
ans*=K
ans+=((N-1)*N // 2)*(K*(K-1)//2)
print(ans%(10**9 + 7))



Fixed code:
N,K=map(int,input().split())
A=list(map(int,input().split()))
ans=0
mod=10**9 + 7


for i in range(N):
  count=0
  for j in range(i+1,N):
    if A[i]>A[j]:
      count+=1
  ans+=count
count=0
for i in range(N):
  for j in range(N):
    if A[i]>A[j]:
      count+=1
ans*=K
ans+=(count%mod)*(K*(K-1)//2)%mod
print(ans%mod)
Buggy code:
N,K=[int(thing) for thing in input().split(" ")]
A_list=[int(i) for i in input().split(" ")]

AA_list=A_list*2
def get_inv_num(l):
    l=list(l)
    ret=0
    for ind in range(len(l)):
        char=l[ind]
        for s_ind in range(len(l))[ind:]:
            if int(l[s_ind])<int(char):
                ret=ret+1
    return ret

def get_inv_external(l):
    import collections
    l=list(l)
    l_count=collections.Counter(l)
    ret=0
    memo={}
    for num in l:
        if str(num) in memo:
            ret=ret+memo[str(num)]
        else:
            ret_tmp=0
            for suuji in l_count:
                if int(suuji)<int(num):
                    ret_tmp=ret_tmp+l_count[suuji]
            memo[str(num)]=ret_tmp
            ret=ret+ret_tmp
    return ret
internal=get_inv_num(A_list)
external=get_inv_external(A_list)
print(internal)
print(external)
ret=internal*K+external*(K-1)*K//2
print(ret)

Fixed code:
N,K=[int(thing) for thing in input().split(" ")]
A_list=[int(i) for i in input().split(" ")]

def get_inv_num(l):
    l=list(l)
    ret=0
    for ind in range(len(l)):
        char=l[ind]
        for s_ind in range(len(l))[ind:]:
            if int(l[s_ind])<int(char):
                ret=ret+1
    return ret

def get_inv_external(l):
    import collections
    l=list(l)
    l_count=collections.Counter(l)
    ret=0
    memo={}
    for num in l:
        if str(num) in memo:
            ret=ret+memo[str(num)]
        else:
            ret_tmp=0
            for suuji in l_count:
                if int(suuji)<int(num):
                    ret_tmp=ret_tmp+l_count[suuji]
            memo[str(num)]=ret_tmp
            ret=ret+ret_tmp
    return ret
internal=get_inv_num(A_list)
external=get_inv_external(A_list)
n,ret=divmod(internal*K+external*(K-1)*K//2,10**9+7)
print(ret)
Buggy code:
n, k = list(map(int, input().split()))
a = list(map(int, input().split()))
k_sum = (k+1)*k//2

ans = 0
minus = 0
for i in range(n):
    tentou = 0
    tentou2 = 0
    for j in range(n):
        if i<j and a[i]>a[j]:
            tentou += 1
        elif i >= j and a[i]>a[j]:
            tentou += 1
            minus +=1
    ans += tentou*k_sum

print(ans%1000000007)


Fixed code:
n, k = list(map(int, input().split()))
a = list(map(int, input().split()))
k_sum = (k-1)*k//2

ans = 0
minus = 0
for i in range(n):
    tentou1 = 0
    tentou2 = 0
    for j in range(n):
        if i<j and a[i]>a[j]:
            tentou1 += 1
        if a[i]>a[j]:
            tentou2 += 1
    ans += tentou1*k+tentou2*k_sum

print(ans%1000000007)
Buggy code:
N, K = map(int, input().split())
A = list(map(int, input().split()))

one_cnt = 0

for i in range(N):
    for j in range(i+1, N):
        if A[i] > A[j]:
            one_cnt+=1

two_cnt = 0
B = A*2

for i in range(N):
    for j in range(N, 2*N):
        if B[i] > B[j]: two_cnt+=1

one_cnt = one_cnt % 1000000007
two_cnt = two_cnt % 1000000007
ans = one_cnt * K + two_cnt * (K-1)

print(ans%1000000007)


Fixed code:
N, K = map(int, input().split())
A = list(map(int, input().split()))

one_cnt = 0

for i in range(N):
    for j in range(i+1, N):
        if A[i] > A[j]:
            one_cnt+=1
two_cnt = 0
B = A*2

for i in range(N):
    for j in range(N, 2*N):
        if B[i] > B[j]: two_cnt+=1


one_cnt = one_cnt % 1000000007
two_cnt = two_cnt % 1000000007
ans = one_cnt * K + two_cnt * (K-1)*K//2

print(ans%1000000007)
Buggy code:
M = 10**9+7
import sys
input = sys.stdin.readline
def main():
    N,K = map(int, input().split())
    A = list(map(int, input().split()))
    A_ = sorted(A, reverse = True)
    ans = 0
    ans_ = 0
    for i in range(0,N-1):
        for j in range(i+1,N):
            if A[i] > A[j]:
                ans += 1
            if A_[i] > A_[j]:
                ans_ += 1

    print(int((((K*(K-1)//2)%M)*ans_+ans*K)%M))

Fixed code:
M = 10**9+7
import sys
input = sys.stdin.readline
def main():
    N,K = map(int, input().split())
    A = list(map(int, input().split()))
    A_ = sorted(A, reverse = True)
    ans = 0
    ans_ = 0
    for i in range(0,N-1):
        for j in range(i+1,N):
            if A[i] > A[j]:
                ans += 1
            if A_[i] > A_[j]:
                ans_ += 1

    print(int((((K*(K-1)//2)%M)*ans_+ans*K)%M))

if __name__ == '__main__':
    main()
Buggy code:
N, K = map(int, input().split())
A = list(map(int, input().split()))
mod = 10**9+7
result = 0
for i in range(N):
    for j in range(N):
        if A[i] > A[j]:
            if i < j:
                result += int(K * (K+1) / 2)
            else:
                result += int((K - 1) * K /2)
            result %= mod
print(result)


Fixed code:
N, K = map(int, input().split())
A = list(map(int, input().split()))
mod = 10**9+7
result = 0
for i in range(N):
    for j in range(N):
        if A[i] > A[j]:
            if i < j:
                result += K * (K+1) // 2
            else:
                result += (K - 1) * K // 2
            result %= mod
print(result)
Buggy code:
import bisect
from collections import deque
import sys
MAX_INT = int(10e9)
MIN_INT = -MAX_INT
mod = 1000000007
sys.setrecursionlimit(1000000000)
def IL(): return list(map(int,input().split()))
def SL(): return input().split()
def I(): return int(sys.stdin.readline())
def S(): return input()

N,K = IL()
a = IL()

cnt = 0
for left in range(N):
  for right in range(left+1,N):
    if a[left] > a[right]:
      cnt += 1
cnt = (cnt*K) %mod

a.sort()
tmp = 0
for i in range(N-1):
  if a[i+1] > a[i]:
    tmp = i+1
  cnt += (K-1)/2 * (2*tmp+(K-2)*tmp)   %mod

print(cnt %mod)

"""
2 1000000006
2 1

10 3
10 9 8 7 6 5 4 3 2 1

cnt += (K-1)/2 * (2*tmp+(K-2)*tmp)   %mod

"""


Fixed code:
import bisect
from collections import deque
import sys
MAX_INT = int(10e9)
MIN_INT = -MAX_INT
mod = 1000000007
sys.setrecursionlimit(1000000000)
def IL(): return list(map(int,input().split()))
def SL(): return input().split()
def I(): return int(sys.stdin.readline())
def S(): return input()

N,K = IL()
a = IL()

cnt = 0
for left in range(N):
  for right in range(left+1,N):
    if a[left] > a[right]:
      cnt += 1
cnt = (cnt*K) %mod

a.sort()
tmp = 0
for i in range(N-1):
  if a[i+1] > a[i]:
    tmp = i+1
  cnt += ((tmp*K*(K-1))//2) %mod

print(cnt %mod)

"""
2 1000000006
2 1

10 3
10 9 8 7 6 5 4 3 2 1
"""
Buggy code:
#https://scrapbox.io/pocala-kyopro/B_-_Kleene_Inversion
MOD = 1000000007
N,K = map(int,input().split())
A = list(map(int, input().split()))
ans = 0
for i in range(N):
    migi = 0
    zentai = 0
    for j in range(i,N):
        if A[i] > A[j]:
            migi += 1
    for j in range(N):
        if A[i] > A[j]:
            zentai += 1
            
    ans += migi * K % MOD
    ans %= MOD
    ans += int((K-1)*K % MOD * zentai % MOD/2)
    ans %= MOD
print(ans)


Fixed code:
#https://scrapbox.io/pocala-kyopro/B_-_Kleene_Inversion
MOD = 1000000007
N,K = map(int,input().split())
A = list(map(int, input().split()))
ans = 0
for i in range(N):
    migi = 0
    zentai = 0
    for j in range(i,N):
        if A[i] > A[j]:
            migi += 1
    for j in range(N):
        if A[i] > A[j]:
            zentai += 1
            
    ans += migi * K % MOD
    ans %= MOD
    ans += (K-1)*K//2 % MOD * zentai % MOD
    ans %= MOD
print(ans)
Buggy code:
import copy
N,K=map(int,input().split())
A=list(map(int,input().split()))
tentou1=0
tentou2=0
l2=copy.deepcopy(A)
l2.extend(A)
p=10**9+7
#print(l2,A)
for i in range(N):
    for j in range(i+1,N):
        #print(i,j)
        if A[i]>A[j]:
            tentou1=tentou1+1
for i in range(2*N):
    for j in range(i+1,2*N):
        if l2[i]>l2[j]:
            tentou2=tentou2+1
print(tentou1,tentou2)
n=(tentou2-tentou1)-tentou1
#for i in range(10):
#    print((i*(3*tentou1-tentou2)+n*(i*(i+1))//2)%p)

print((K*(3*tentou1-tentou2)+n*(K*(K+1))//2)%p)


Fixed code:
import copy
N,K=map(int,input().split())
A=list(map(int,input().split()))
tentou1=0
tentou2=0
l2=copy.deepcopy(A)
l2.extend(A)
p=10**9+7
#print(l2,A)
for i in range(N):
    for j in range(i+1,N):
        #print(i,j)
        if A[i]>A[j]:
            tentou1=tentou1+1
for i in range(2*N):
    for j in range(i+1,2*N):
        if l2[i]>l2[j]:
            tentou2=tentou2+1
#print(tentou1,tentou2)
n=(tentou2-tentou1)-tentou1
#for i in range(10):
#    print((i*(3*tentou1-tentou2)+n*(i*(i+1))//2)%p)

print((K*(3*tentou1-tentou2)+n*(K*(K+1))//2)%p)
Buggy code:
def resolve():
    N,K=map(int,input().split())
    a=list(map(int,input().split()))

    A=[0]*2000
    B=[0]*2000
    mina=min(a)
    for i in reversed(range(len(a))):
        if a[i]==mina:continue
        for j in range(i+1,N):
            if a[j]<a[i]:
                A[a[i]]+=1
    for i in reversed(range(len(a))):
        if a[i]==mina:continue
        for j in range(N):
            if a[j]<a[i]:
                B[a[i]]+=1
    sumA=sum(A)
    sumB=sum(B)
    ans=(0.5*(2*sumA+(K-1)*sumB)*K)%(10**9+7)
    print('{}'.format(ans))

resolve()

Fixed code:
def resolve():
    N,K=map(int,input().split())
    a=list(map(int,input().split()))

    A=0
    B=0
    mina=min(a)
    for i in reversed(range(len(a))):
        if a[i]==mina:continue
        for j in range(i,len(a)):
            if a[j]<a[i]:
                A+=1
    for i in reversed(range(len(a))):
        if a[i]==mina:continue
        for j in range(len(a)):
            if a[j]<a[i]:
                B+=1
    ans=int(((2*A+(K-1)*B)*K//2)%(10**9+7))
    print('{}'.format(ans))

resolve()
Buggy code:
N,K = list(map(int,input().split()))
A = list(map(int,input().split()))
a = N*[0]

for i in range(N):
  for j in range(N):
    if i<j and A[i]>A[j]:
      a[i]+=1

c = [i*K*(K+1)//2 for i in a]
print(sum(c))%(10**9+7)

Fixed code:
N,K = list(map(int,input().split()))
A = list(map(int,input().split()))
a = N*[0]
b = N*[0]

for i in range(N):
  for j in range(N):
    if i<j and A[i]>A[j]:
      a[i]+=1
    if i<j and A[i]<A[j]:
      b[i]+=1

print((sum(a)*K*(K+1)//2+sum(b)*K*(K-1)//2)%(10**9+7))
Buggy code:
n,k = map(int,input().split())
a = list(map(int,input().split()))
b = a
ans = 0
for i in range(n):
    x = 0
    for j in range(i):
        if a[i] > a[j]:
            x += 1
    y = 0
    for j in range(n):
        if a[i] > b[j]:
            y += 1
    ans += (y * ((1 + k) * k // 2)) - x
    ans %= (10^9 + 7)
print(ans)

Fixed code:
n,k = map(int,input().split())
a = list(map(int,input().split()))
b = a
ans = 0
for i in range(n):
    x = 0
    y = 0
    for j in range(i):
        if a[i] > a[j]:
            x += 1
    for j in range(n):
        if a[i] > b[j]:
            y += 1
    ans += y * ((1 + k) * k // 2) - x * k
    ans %= ((10 ** 9) + 7)
print(ans)
Buggy code:
mod=10**9+7

n,k = map(int,input().split())
l = list(map(int,input().split()))
l2 = l+l

x=0
for i in range(n-1):
    for j in range(i+1,n):
        if l[i] > l[j]:
            x+=1

y=0
for i in range(2*n-1):
    for j in range(i+1,2*n):
        if l2[i] > l2[j]:
            y+=1
y-=(x*k)

for i in range(k-1):
    y = (y*(1+i))%mod

print((y + (x*k)%mod)%mod)


Fixed code:
mod=10**9+7

n,k = map(int,input().split())
l = list(map(int,input().split()))
l2 = l+l

x=0
for i in range(n-1):
    for j in range(i,n-1):
        if l[i] > l[j+1]:
                x+=1

y=0
for i in range(2*n-1):
    for j in range(i,2*n-1):
        if l2[i] > l2[j+1]:
                y+=1

y-=(2*x)

tmp = (k*(k-1)//2)%mod
ans = ((tmp*y)%mod + (x*k)%mod)%mod
print(ans)
Buggy code:
import sys
input = sys.stdin.readline
N, K = [int(x) for x in input().strip().split()]
A = [int(x) for x in input().strip().split()]
B = A * N
T_A = 0
T_A_all = 0
for i,a in enumerate(A):
    T_A += len([1 for x in A[i+1:] if a > x])
    T_A_all += len([1 for x in A if a > x])

if T_A_all == 1:
    print(int(T_A * K + (K - 1)))
else:
    a = T_A
    z = T_A + T_A_all * (K -1)
    print(int((K/2*(a+z))%(10**9+7)))


Fixed code:
import sys
input = sys.stdin.readline
N, K = [int(x) for x in input().strip().split()]
A = [int(x) for x in input().strip().split()]
T_A = 0
T_A_all = 0
for i,a in enumerate(A):
    T_A += len([1 for x in A[i+1:] if a > x])
    T_A_all += len([1 for x in A if a > x])
a = T_A
z = T_A + T_A_all * (K -1)
print(int((T_A*K+T_A_all*K*(K-1)//2)%((10**9)+7)))