qyliang/CodeNanoFix huggingface dataset:
Buggy code:
n = int(input())
p = list(map(int, input().split()))
q = [0] * (n + 2)
c = 0
ans = 0
for i in range(n):
    if p[i] == i + 1:
        q[i + 1] = 1
for i in range(1, n + 2):
    if q[i] == 1 and q[i - 1] == 0:
        c = 1
    elif q[i] == 1 and q[i - 1] == 1:
        c += 1
    elif q[i] == 0 and q[i - 1] == 1:
        ans += (c + 1) // 2
print(ans)
print(q)

Fixed code:
n = int(input())
p = list(map(int, input().split()))
q = [0] * (n + 2)
c = 0
ans = 0
for i in range(n):
    if p[i] == i + 1:
        q[i + 1] = 1
for i in range(1, n + 2):
    if q[i] == 1 and q[i - 1] == 0:
        c = 1
    elif q[i] == 1 and q[i - 1] == 1:
        c += 1
    elif q[i] == 0 and q[i - 1] == 1:
        ans += (c + 1) // 2
print(ans)
Buggy code:
input()
get_data = input().split(' ')  # String
default = 1
dup_list = list()
for v in get_data:
  if int(v) == default:
    dup_list.append(int(v))
  default += 1

print(dup_list)

del_count = 0
next_skip = False
for v in dup_list:
  if next_skip:
    next_skip = False
    continue
  if v+1 in dup_list:
    next_skip = True
  del_count += 1
  
print(del_count)

Fixed code:
input()
get_data = input().split(' ')  # String
default = 1
dup_list = list()
for v in get_data:
  if int(v) == default:
    dup_list.append(int(v))
  default += 1
 
del_count = 0
next_skip = False
for v in dup_list:
  if next_skip:
    next_skip = False
    continue
  if v+1 in dup_list:
    next_skip = True
  del_count += 1
  
print(del_count)
Buggy code:
n = input()
a = list(map(int,input().split()))
a.insert(0.5)
alen = len(a)
a.append(0.5)

ans = 0
 
med = [0 for x in range(alen +1)]
 
for i in range(alen):
    if a[i] == i:
        med[i+1] = 1
 
for i in range(len(med)):
    if med[i] == 1:
      if med[i+1] == 1:
          med[i+1] = 0
          ans += 1
      else:
        ans += 1
        
print(ans)

Fixed code:
n = input()
a = list(map(int,input().split()))
a.insert(0,0.5)
alen = len(a)
a.append(0.5)
a.append(0.5)

ans = 0
 
med = [0 for x in range(alen +2)]
 
for i in range(alen):
    if a[i] == i:
        med[i+1] = 1

for i in range(len(med)):
    if med[i] == 1:
        if med[i+1] == 1:
            med[i+1] = 0
            ans += 1
        else:
            ans += 1
        
print(ans)
Buggy code:
n = int(input())
p = list(map(int, input().split()))

i=0
ans=0
while i<n-1:                                                                                     if p[i] == i+1 and p[i+1] == i+2:
        p[i],p[i+1] = p[i+1],p[i]
        ans+=1
    elif p[i] == i+1 and p[i+1] != i+2:
        p[i],p[i+1] = p[i+1],p[i]
        ans+=1
    i+=1
if p[n-1] == n and p[n-2]!=n-1:
    ans+=1
print(ans)

Fixed code:
n = int(input())
p = list(map(int, input().split()))

i=0
ans=0
while i<n-1:
    if p[i] == i+1 and p[i+1] == i+2:
        p[i],p[i+1] = p[i+1],p[i]
        ans+=1
    elif p[i] == i+1 and p[i+1] != i+2:
        p[i],p[i+1] = p[i+1],p[i]
        ans+=1
    i+=1
if p[n-1] == n and p[n-2]!=n-1:
    ans+=1
print(ans)
Buggy code:
n = int(input())
p = list(map(int, input().split()))
ans = 0

for i in range(n-1):
	if i+1 == p[i]:
		p[i],p[i+1] = p[i+1],p[i]
		ans += 1
		
print(ans)
print(p)

Fixed code:
n = int(input())
p = list(map(int, input().split()))
ans = 0

for i in range(n-1):
	if i+1 == p[i]:
		p[i],p[i+1] = p[i+1],p[i]
		ans += 1
		
if p[-1] == len(p):
	ans += 1	
print(ans)
Buggy code:
# sys.stdin.readline()
import sys
input = sys.stdin.readline

n = int(input())
p = list(map(int, input().split()))
ans = 0
for i in range(1,n):
    if i == p[i-1]:
        if p[i]-1 == p[i-1]:
            ans -= 1
        ans += 1
print(ans)

Fixed code:
# sys.stdin.readline()
import sys
input = sys.stdin.readline

n = int(input())
p = list(map(int, input().split()))
ans = 0
for i in range(n-1):
    if i+1 == p[i]:
        if p[i]+1 == p[i+1]:
            p[i+1] = p[i]
        ans += 1
if p[n-1] == n:
    ans += 1
print(ans)
Buggy code:
N = int(input())
p = list(map(int, input().split()))

counter = 0
seq = 0
for i in range(N):
    if p[i] == i + 1:
        seq += 1
    elif seq != 0:
        counter += (seq + 1) // 2    
        seq = 0
print(counter)


Fixed code:
N = int(input())
p = list(map(int, input().split())) + [0]

counter = 0
seq = 0
for i in range(N + 1):
    if p[i] == i + 1:
        seq += 1
    elif seq != 0:
        counter += (seq + 1) // 2    
        seq = 0
print(counter)
Buggy code:
def solve():
    N = int(input())
    p = list(map(int,input().split))
    count = 0
    for i in range(N):
        if p[i] == i:
            p[i],p[i+1] = p[i+1],p[i]
            count += 1
    print(count)

if __name__ == '__main__':
    solve()


Fixed code:
def solve():
    N = int(input())
    p = list(map(int, input().split()))
    count = int(0)
    for i in range(N):
        if p[i] == i+1:
            if i+1 == N:
                p[i], p[i - 1] = p[i - 1], p[i]
                count += 1
            else:
                p[i], p[i+1] = p[i+1], p[i]
                count += 1
    print(count)

if __name__ == '__main__':
    solve()
Buggy code:
N = int(input())
p = list(map(int, input().split()))

res = 0
for i in range(len(p) - 1):
    if i + 1 == p[i]:
        continue

    res += 1
    tmp = p[i]
    p[i] = p[i+1]
    p[i+1] = tmp

if N == p[N-1]:
    res += 1

print(res)


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

res = 0
for i in range(len(p) - 1):
    if i + 1 != p[i]:
        continue

    res += 1
    tmp = p[i]
    p[i] = p[i+1]
    p[i+1] = tmp

if N == p[N-1]:
    res += 1

print(res)
Buggy code:
from sys import stdin
N = int(stdin.readline().rstrip())
P = [int(x) for x in stdin.readline().rstrip().split()]
cnt = 0
for i,j in enumerate(P):
    if i+1 != j:
        cnt += 1
print(cnt//2)

Fixed code:
from sys import stdin
N = int(stdin.readline().rstrip())
P = [int(x) for x in stdin.readline().rstrip().split()]
cnt = 0
ans = 0
for i,j in enumerate(P):
    if i+1 == j:
        cnt += 1
    else:
        ans += ((cnt+1)//2)
        cnt = 0
ans += ((cnt+1)//2)
print(ans)
Buggy code:
N = int(input())
p = list(map(int,input().split()))
ans = 0
c = 0
for i in range(N-1):
    if p[i] == i+1:
        c += 1
    else:
        ans += (c+1)//2
        c = 0
print(ans)

Fixed code:
N = int(input())
p = list(map(int,input().split()))
ans = 0
c = 0
for i in range(N):
    if p[i] == i+1:
        c += 1
    else:
        ans += (c+1)//2
        c = 0
print(ans+(c+1)//2)
Buggy code:
n=int(input())
alist = [int(i) for i in input().split()]
ans=0
 
for i in range(n-1):
	if alist[i]==i+1:
		temp=alist[i+1]
		alist[i+1]=alist[i]
		alist[i]=temp
		ans+=1
if alist[n-1]=n:
	ans+=1
print(ans)

Fixed code:
n=int(input())
alist = [int(i) for i in input().split()]
ans=0
 
for i in range(n-1):
	if alist[i]==i+1:
		temp=alist[i+1]
		alist[i+1]=alist[i]
		alist[i]=temp
		ans+=1
if alist[n-1]==n:
	ans+=1
print(ans)
Buggy code:
n = int(input())
p = list(map(int, input().split()))

ans = 0
for i, _ in enumerate(p[:-1]):
    #print(p_, i+1)
    p_ = p[i]
    if p_ == i + 1:
        ans += 1
        p[i], p[i+1] = p[i+1], p[i]

if p[-1] = N:
  ans += 1
        
print(ans)



Fixed code:
n = int(input())
p = list(map(int, input().split()))

ans = 0
for i, _ in enumerate(p[:-1]):
    #print(p_, i+1)
    p_ = p[i]
    if p_ == i + 1:
        ans += 1
        p[i], p[i+1] = p[i+1], p[i]

if p[-1] == n:
  ans += 1
        
print(ans)
Buggy code:
N=int(input().strip())
p=map(int,input().split())

ans=0
flag=0
for i in range(len(p)):
    if i+1 == p[i]:
        if flag==0:
            ans+=1
        else: # if flag == 1
            flag=0
print(ans)

Fixed code:
N=int(input().strip())
p=list(map(int,input().split()))

ans=0
flag=0
for i in range(len(p)):
    if i+1 == p[i]:
        if flag==0:
            ans+=1
            flag=1
        else: # if flag == 1
            flag=0
    else: # if i+1 != p[i] 
        flag=0

print(ans)
Buggy code:
import sys
read=sys.stdin.read

n,*p=map(int,read().split())
cl=[]
f=0
for i in range(n):
  if p[i]==i+1:
    if f==0:
      cl.append(1)
      f=1
    else:
      cl[-1]+=1
  else:
    if f==1:
      cl[-1]=cl[-1]//2+(cl[-1]%2)
    f=0

print(sum(cl))

Fixed code:
import sys
read=sys.stdin.read

n,*p=map(int,read().split())
p.append(-1)
cl=[]
f=0
for i in range(n+1):
  if p[i]==i+1:
    if f==0:
      cl.append(1)
      f=1
    else:
      cl[-1]+=1
  else:
    if f==1:
      cl[-1]=cl[-1]//2+(cl[-1]%2)
    f=0

print(sum(cl))
Buggy code:
N=int(input())
alist=[0]+list(map(int,input().split()))

if alist[N]=N:
  alist[N-1],alist[N]=alist[N],alist[N-1]
  answer+=1

answer=0
for i in range(1,N+1):
  if alist[i]==i:
    alist[i],alist[i+1]=alist[i+1],alist[i]
    answer+=1
    
print(answer)

Fixed code:
N=int(input())
alist=[0]+list(map(int,input().split()))

answer=0
for i in range(1,N):
  if alist[i]==i:
    alist[i],alist[i+1]=alist[i+1],alist[i]
    answer+=1
    
if alist[N]==N:
  print(answer+1)
else:
  print(answer)
Buggy code:
N = int(input())
p = list(map(int, input().split()))

ans = 0
for i, num in enumerate(p):
    if i + 1 == p[i]:
        temp = p[i]
        try:
            p[i] = p[i + 1]
            p[i + 1] = temp
        except IndexError:
            pass
        ans += 1

print(ans)
print(p)

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

ans = 0
for i, num in enumerate(p):
    if i + 1 == p[i]:
        temp = p[i]
        try:
            p[i] = p[i + 1]
            p[i + 1] = temp
        except IndexError:
            pass
        ans += 1

print(ans)
Buggy code:
n = input().split()
nums = list(map(int, input.split()))

flag = 0
ans = 0
for i, num in enumerate(nums):
  if i == num:
    if flag:
      ans += 1 
      flag = 0
    else:
      flag = 1
  else:
    if flag == 1:
      ans += 1
      flag = 0
      
if flag == 1:
  ans += 1
  
print(ans)

Fixed code:
n = int(input())
nums = list(map(int, input().split()))

flag = 0
ans = 0
for i, num in enumerate(nums):
  if i == num - 1:
    if flag:
      ans += 1 
      flag = 0
    else:
      flag = 1
  else:
    if flag == 1:
      ans += 1
      flag = 0
      
if flag == 1:
  ans += 1
  
print(ans)
Buggy code:
n = int(input())
a = [int(j)==i+1 for i,j in enumerate(input().split())]
res = 0
for i in range(n-1):
    if not a[i]:
        res += 1
        a[i],a[i+1] = True,True
print(res)


Fixed code:
n = int(input())
a = [i+1!=int(j) for i,j in enumerate(input().split())]
res = 0
for i in range(n):
    if not a[i]:
        a[i] = True
        if i+1!=n:
            a[i+1] = True
        res += 1
print(res)
Buggy code:
p = [int(i) for i in input().split()]
l = len(p)
number = [i+1 for i in range(l)]
d = [bool(p[i]-number[i]) for i in range(l)]
d.append(True)
cnt = 0
i = 0
while i < l:
    if d[i] == False:
        cnt += 1
        if d[i+1] == False:
            i += 1
    i += 1

print(cnt)

Fixed code:
n = int(input())
p = [int(i) for i in input().split()]
l = len(p)
number = [i+1 for i in range(l)]
d = [bool(p[i]-number[i]) for i in range(l)]
d.append(True)
cnt = 0
i = 0
while i < l:
    if d[i] == False:
        cnt += 1
        if d[i+1] == False:
            i += 1
    i += 1

print(cnt)
Buggy code:
n = int(input())

p = list(map(int, input().split()))
cnt = 0 
i = 0
while i < n-1:
      if p[i] == i+1:
            cnt += 1
            i += 2
print(cnt)

Fixed code:
n = int(input())

p = list(map(int, input().split()))
cnt = 0 
i = 0
while i <= n-1:
      if p[i] == i+1:
            cnt += 1
            i += 2
      else:
            i += 1
print(cnt)
Buggy code:
N = int(input())
P_s = list(map(int, input().split()))

orders = [i + 1 for i in range(N)]
total = 0

if (P_s[0] == 1):
    tmp = P_s[0]
    P_s[0] = P_s[1]
    P_s[1] = tmp
    total += 1

for i in range(1, N):
    p = P_s[i]
    n = orders[i]
    
    if (n == p):
        tmp = P_s[i]
        P_s[i] = P_s[i - 1]
        P_s[i - 1] = tmp
        total += 1

print(total-1)

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

orders = [i + 1 for i in range(N)]
total = 0

for i in range(N - 1):
    p = P_s[i]
    n = orders[i]
    
    if (n == p):
        tmp = P_s[i]
        P_s[i] = P_s[i + 1]
        P_s[i + 1] = tmp
        
        total += 1

if (P_s[N - 1] == N):
    total += 1

print(total)
Buggy code:
n = int(input())
p = list(map(int, input().split()))

ans = 0
tmp = 0
for i in range(n):
  if i+1 == p[i] :
    ans += (tmp+1)//2
    tmp = 0
  else:
    tmp += 1
    
ans += (tmp+1)//2
print(ans)
    
    

Fixed code:
n = int(input())
p = list(map(int, input().split()))

ans = 0
tmp = 0
for i in range(n):
  if i+1 != p[i] :
    ans += (tmp+1)//2
    tmp = 0
  else:
    tmp += 1
    
ans += (tmp+1)//2
print(ans)
Buggy code:
n = int(input())
p = list(map(int, input().split()))
ans = 0
for i in range(n-1):
    if p[i] == i+1:
        p[i], p[i+1] = p[i+1], p[i]
        ans += 1
if p[n-1] = n:
    p[n-1], p[n-2] = p[n-2], p[n-1]
    ans += 1
print(ans)

Fixed code:
n = int(input())
p = list(map(int, input().split()))
ans = 0
for i in range(n-1):
    if p[i] == i+1:
        p[i], p[i+1] = p[i+1], p[i]
        ans += 1
if p[n-1] == n:
    p[n-1], p[n-2] = p[n-2], p[n-1]
    ans += 1
print(ans)
Buggy code:
N = int(input())
p = list(map(int, input().split()))
ans = 0
for i in range(N - 1):
    if p[i] == i + 1:
        p[i], p[i + 1] = p[i + 1], p[i]
    ans += 1
if p[-1] == N:
    ans += 1
print(ans)


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

M=0
for i in range(N-1):
    if p[i]==i+1:
        p[i],p[i+1]=p[i+1],p[i]
        M+=1
if p[N-1]==N:
    M+=1
print(M)
Buggy code:
n=int(input())
P=list(map(int,input().split()))
cnt=0
for i in range(n-1):
    if P[i]==i+1:
        tmp=P[i]
        P[i]=P[i+1]
        P[i+1]=tmp
        cnt+=1
if P[n]==n+1:
    cnt+=1
print(cnt)

Fixed code:
n=int(input())
P=list(map(int,input().split()))
cnt=0
for i in range(n-1):
    if P[i]==i+1:
        tmp=P[i]
        P[i]=P[i+1]
        P[i+1]=tmp
        cnt+=1
if P[n-1]==n:
    cnt+=1
print(cnt)
Buggy code:
n=int(input())
array=list(map(int,input().split()))
ans=0
flag=0
for i in range(len(array)):
    if i+1==array[i]:
        if flag==0:
            ans+=1
            if(i<len(array)-1&&array[i+1]==i+2):
                flag=1
        else:
            flag=0
print(ans)

Fixed code:
n=int(input())
array=list(map(int,input().split()))
ans=0
flag=0
for i in range(len(array)):
    if i+1==array[i]:
        if flag==0:
            ans+=1
            if(i<len(array)-1 and array[i+1]==i+2):
                flag=1
        else:
            flag=0
print(ans)
Buggy code:
N = int(input())
p = list(map(int, input().split()))
plen = len(p)

count = 0
for i in range(1, plen):
    if p[i] == i :
        if p[i] == N:
            p[i -1], p[i] = p[i], p[i - 1]
            count += 1
            break
        else:
            p[i], p[i + 1] = p[i + 1], p[i]
            count += 1
print(count)


Fixed code:
N = int(input())
p = list(map(int, input().split()))
plen = len(p)

count = 0

for i in range(plen):
    if p[i] == i + 1:
        if p[i] == N:
            p[i - 1], p[i] = p[i], p[i - 1]
        else:
            p[i], p[i + 1] = p[i + 1], p[i]
        count += 1
    
            
print(count)
Buggy code:
n = int(input())
p = list(map(int, input().split()))
st = []
c = 0
for i in range(0,n):
    if (p[i] == i+1):
        st.append(1)
    else:
        st.append(0)
print(st)
def cal(a):   
    global c    
    if (st[a]== 1 and  st[a+1]==1):
        c += 1
        return a+2
    return a+1
p=0           
while (p < n-1):
    p = cal(p)
    
y = st.count(1)
print(y-c)
        

Fixed code:
n = int(input())
p = list(map(int, input().split()))
st = []
c = 0
for i in range(0,n):
    if (p[i] == i+1):
        st.append(1)
    else:
        st.append(0)
def cal(a):   
    global c    
    if (st[a]== 1 and  st[a+1]==1):
        c += 1
        return a+2
    return a+1
p=0           
while (p < n-1):
    p = cal(p)
    
y = st.count(1)
print(y-c)
Buggy code:
N = int(input())
A = list(map(int, input().split()))
ans = 0
for i in range(len(A)-1):
  if (i+1 == A[i]):
    ans += 1
    A[i],A[i+1] = A[i+1],A[i]
if (A[-1] == l):
  ans += 1
print(ans)

Fixed code:
N = int(input())
A = list(map(int, input().split()))
ans = 0
for i in range(len(A)-1):
  if (i+1 == A[i]):
    ans += 1
    A[i],A[i+1] = A[i+1],A[i]
if (A[-1] == len(A)):
  ans += 1
print(ans)
Buggy code:
N = int(input())
p = list(map(int, input().split()))
cnt = 0
if p[0] == 1:
    tmp = p[1]
    p[1] = p[0]
    p[0] = tmp
    cnt += 1

for i in range(N, 0, -1):
    if i == p[i - 1]:
        tmp = p[i]
        p[i] = p[i - 1]
        p[i - 1] = tmp
        cnt += 1

print(p, cnt)

Fixed code:
N = int(input())
p = list(map(int, input().split()))
cnt = 0
#if p[0] == 1:
#    tmp = p[1]
#    p[1] = p[0]
#   p[0] = tmp
#    cnt += 1

for i in range(N - 1, -1, -1):
    if i + 1 == p[i]:
        tmp = p[i]
        p[i] = p[i - 1]
        p[i - 1] = tmp
        cnt += 1

print(cnt)
Buggy code:
N = int(input()) # 10**5
P = [int(x)-1 for x in input().split()]

# 1 4 3 5 2
# 1 2 3 4 5
# x o x o o

# 1 2 3
# x x x
# 2 1 3
# o o x

cnt = 0
i = 0
while i < N-1:
    if P[i] != i:
        P[i],P[i+1] = P[i+1],P[i]
        i+=1
    else: # P[i] == i
        P[i],P[i+1] = P[i+1],P[i]
        cnt += 1
        i+=2
if P[N-1] == N-1:
    cnt+=1
print(cnt)


Fixed code:
N = int(input()) # 10**5
P = [int(x)-1 for x in input().split()]

# 1 4 3 5 2
# 1 2 3 4 5
# x o x o o

# 1 2 3
# x x x
# 2 1 3
# o o x
cnt = 0
i = 0
while i < N-1:
    if P[i] != i:
        i+=1
    else: # P[i] == i
        P[i],P[i+1] = P[i+1],P[i]
        cnt += 1
        i+=2
if P[N-1] == N-1:
    cnt+=1
print(cnt)
Buggy code:
N = int(input())
P = list(map(int, input().split()))
res = 0
for idx in range(len(P) - 1):
    if P[idx] == idx + 1:
        res += 1
if P[-1] == N:
    res += 1

print(res)


Fixed code:
N = int(input())
P = list(map(int, input().split()))
res = 0
for idx in range(len(P) - 1):
    if P[idx] == idx + 1:
        P[idx], P[idx+1] = P[idx+1], P[idx]
        res += 1

if P[-1] == N:
    res += 1

print(res)
Buggy code:
#A - Ice Tea Store
Q,H,S,D = map(int,input().split())
N = int(input())

Q1,H1 = 4*Q,2*H
S = min(Q1,H1,S)

if 2*S>D:
    cnt_2 = N//2
    cnt_1 = N%2
    pay = a*cnt_2 + S*cnt_1
else:
    pay = (N//A) * S
print(int(pay))

Fixed code:
#A - Ice Tea Store
Q,H,S,D = map(int,input().split())
N = int(input())

Q1,H1 = 4*Q,2*H
S = min(Q1,H1,S)

if 2*S>D:
    cnt_2 = N//2
    cnt_1 = N%2
    pay = D*cnt_2 + S*cnt_1
else:
    pay = N * S
print(pay)
Buggy code:
q,h,s,d = map(int,input().split())
N = int(input())
one = min(q*4,h*2,s)
print(min(one*N,d*(N//2)+one*(n%2)))


Fixed code:
q,h,s,d=map(int,input().split())
n=int(input())

one = min(q*4,h*2,s)
two = min(one*2,d)

print((n//2)*two+(n%2)*one)
Buggy code:
Q,H,S,D = map(int,input().split())
X = min(4*Q,2*H,S)
Y = min(2*X,D)
print((N//2)*Y+(N%2)*X)

Fixed code:
Q,H,S,D = map(int,input().split())
N = int(input())
X = min(4*Q,2*H,S)
Y = min(2*X,D)
print((N//2)*Y+(N%2)*X)
Buggy code:
q, h, s, d = map(int, input().split())
n = int(input())
cheep_1 = min(q * 4, 2 * h, s)
if 2 * cheep_1 <= d:
    print(cheep_1 * n)
else:
    n1 = n % 2
    print(n // 2 + n1 * cheep_1)


Fixed code:
q, h, s, d = map(int, input().split())
n = int(input())
cheep_1 = min(q * 4, 2 * h, s)
if 2 * cheep_1 <= d:
    print(cheep_1 * n)
else:
    n1 = n % 2
    print(n // 2 * d + n1 * cheep_1)
Buggy code:
Q,H,S,D=map(int,input().split())
N=int(input())

one=min (4*Q,2*H,S)
if N==1:
    print(min(one,D))
else :
    if 2*one<=D:
        print(N*one)
    else:
        print((N//2)*D+one)

Fixed code:
Q,H,S,D=map(int,input().split())
N=int(input())

one=min (4*Q,2*H,S)
if N==1:
    print(one)
else :
    if 2*one<=D:
        print(N*one)
    else:
        if N%2==0:
            print((N//2)*D)
        else:
            print((N//2)*D+one)
Buggy code:
Q, H, S, D = map(int, input().split())
N = int(input())

cQ = Q*4
cH = H*2
cS = S
cD = D / 2

m = min(cQ, cH, cS, cD)

if m == cQ:
    print(cQ * N)
elif m == cH:
    print(cH * N)
elif m == cS:
    print(cS * N)
else:
    if N % 2 == 0:
        print(D * N // 2)
    elif N == 1:
        print(min(cQ, cH, cS))
    else:
        c = (N-1)*cD
        print(c + min(cQ, cH, cS))

Fixed code:
Q, H, S, D = map(int, input().split())
N = int(input())

cQ = Q*8
cH = H*4
cS = S*2
cD = D 

m = min(cQ, cH, cS, cD)

if m == cQ:
    print(Q * N * 4)
elif m == cH:
    print(H * N * 2)
elif m == cS:
    print(S * N)
else:
    if N % 2 == 0:
        print(D * N // 2)
    elif N == 1:
        print(min(Q * 4, H * 2, S))
    else:
        c = (N-1) // 2 * D
        print(c + min(Q * 4, H * 2, S))
Buggy code:
q, h, s, d = map(int, input().split())
n = int(input())
ans = 0
q_per = q / 0.25
h_per = h / 0.5
s_per = s
d_per = d / 2
list = [q_per,h_per,s_per,d_per]
elif min(list) == d_per :
    if n%2 == 0:
        ans += d * (n //2)
    else :
        ans += n//2 * d
        n -= n//2
        list.remove(d_per)
        if min(list) == s_per :
            ans += s_per
        elif min(list) == h_per :
            ans += h * 2
        else :
            ans += q * 4
elif min(list) == s_per :
    ans += n * s
elif min(list) == h_per :
    ans += n * 2 * h
else :
    ans += n * 4 * q

print(int(ans))


Fixed code:
q, h, s, d = map(int, input().split())
n = int(input())
ans = 0
q_per = q / 0.25
h_per = h / 0.5
s_per = s
d_per = d / 2
list = [q_per,h_per,s_per,d_per]
if min(list) == d_per :
    if n%2 == 0:
        ans += d * (n //2)
    else :
        ans += n//2 * d
        n -= n//2
        list.remove(d_per)
        if min(list) == s_per :
            ans += s_per
        elif min(list) == h_per :
            ans += h * 2
        else :
            ans += q * 4
elif min(list) == s_per :
    ans += n * s
elif min(list) == h_per :
    ans += n * 2 * h
else :
    ans += n * 4 * q

print(int(ans))
Buggy code:
price = [int(w) for w in input().split()]
n = int(input())
price[0]*4
price[1]*2
cheap = min(price[:3])

ans = n // 2 * min(cheap * 2, price[3])
ans += n % 2 * cheap


print(ans)


Fixed code:
price = [int(w) for w in input().split()]
n = int(input())
price[0]*=4
price[1]*=2
cheap = min(price[:3])

ans = n // 2 * min(cheap * 2, price[3])
ans += n % 2 * cheap


print(ans)
Buggy code:
price = [int(x) for x in input().split()];
N = int(input());
price_d = price[3];
price_s = 2*price[2];
price_h = 4*price[1];
price_q = 8*price[0];
p = min([price_q,price_h,price_s]);
if price_d < p :
    if N%2 == 1 :
        ans = (N-1)//2*price_d + p//2;
    else :
        ans = N//2*price_d;
else :
    ans = N*p//2;

print(ans));



Fixed code:
price = [int(x) for x in input().split()];
N = int(input());
price_d = price[3];
price_s = 2*price[2];
price_h = 4*price[1];
price_q = 8*price[0];
p = min([price_q,price_h,price_s]);
if price_d < p :
    if N%2 == 1 :
        ans = (N-1)//2*price_d + p//2;
    else :
        ans = N//2*price_d;
else :
    ans = N*p//2;

print(ans);
Buggy code:
a, b, c, d = map(int, input().split())
n = int(input())
 
b = min(a + a, b)
c = min(b + b, c)
d = min(c + c, d)
 
q, r = divmod(N, 2)
x = q * d + r * c
print(x)

Fixed code:
a, b, c, d = map(int, input().split())
N = int(input())

b = min(a + a, b)
c = min(b + b, c)
d = min(c + c, d)

q, r = divmod(N, 2)
x = q * d + r * c
print(x)
Buggy code:
#! /usr/bin/env python3

import sys
import numpy as np
int1 = lambda x: int(x) - 1
read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines
sys.setrecursionlimit(500000)

Q, H, S, D, N = map(int, read().split())
H = min(Q * 2, H)
S = min(H *2 , S)

if S * 2 < D:
    print(N * S)
else:
    print(N / 2 * D + N % 2 * S)

Fixed code:
#! /usr/bin/env python3

import sys
import numpy as np
int1 = lambda x: int(x) - 1
read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines
sys.setrecursionlimit(500000)

Q, H, S, D, N = map(int, read().split())
H = min(Q * 2, H)
S = min(H *2 , S)

if S * 2 < D:
    print(N * S)
else:
    print(N // 2 * D + N % 2 * S)
Buggy code:
q,h,s,d = map(int,input().split())
n = int(input())
a = 0
if n%2 == 1:
  n -= 1
  a += 1
ans = n//2*min(8*q,4*h,2*s,d)+a*min(4*q,2*h,s,d)
print(ans)

Fixed code:
q,h,s,d = map(int,input().split())
n = int(input())
a = 0
if n%2 == 1:
  n -= 1
  a += 1
ans = n//2*min(8*q,4*h,2*s,d)+a*min(4*q,2*h,s)
print(ans)