Buggy python submission (verdict: Runtime Error):
import math as mt
import numpy as np

string = input()
use = string.split('x')
word =''
for x in use:
    word += x
i = 0
n = len(word) - 1
while i < n:
    if word[i] != word[n]:
        print(-1)
        exit()
    i += 1
    n -= 1
if len(word) % 2 == 0:
    fh = []
    i = 0
    mid = int(len(word)/2)
    count = 0
    n = len(string) - 1
    for x in string:
        if x == word[i]:
            i += 1
            fh.append(count)
            count = 0
            if i == mid:
                break
        else:
            count += 1
    i = len(word) - 1
    lh = []
    count = 0
    while i != mid - 1:
        if string[n] == word[i]:
            i -= 1
            lh.append(count)
            count = 0
        else:
            count += 1
        n -= 1
    if len(lh) != len(fh):
        print(12222)
        exit()
    print(np.sum(np.abs(np.array(fh)-np.array(lh))))

else:
    fh = []
    i = 0
    mid = int((len(word) - 1)/2)
    count = 0
    n = len(string) - 1
    for x in string:
        if x == word[i]:
            i += 1
            fh.append(count)
            count = 0
            if i > mid:
                break
        else:
            count += 1
    i = len(word) - 1
    lh = []
    count = 0
    while i != mid - 1:
        if string[n] == word[i]:
            i -= 1
            lh.append(count)
            count = 0
        else:
            count += 1
        n -= 1
    if len(lh) != len(fh):
        print(12222)
        exit()
    print(np.sum(np.abs(np.array(fh)-np.array(lh))))


Fixed submission:
import math as mt
import numpy as np

string = input()
collect = []
word = ''
count = 0
n = len(string)
i = 0
for x in string:
    if x != 'x':
        word += x
        collect.append(count)
        if i == n-1:
            collect.append(0)
        count = 0
    elif i == n-1:
        count += 1
        collect.append(count)
    else:
        count += 1
    i += 1

nl = len(word) - 1
i = 0
while i < nl:
    if word[i] != word[nl]:
        print(-1)
        exit()
    i += 1
    nl -=  1
nl = len(collect) - 1
i = 0
out = 0
while i < nl:
    out += np.abs(collect[i] - collect[nl])
    i += 1
    nl -= 1
print(out)

Buggy python submission (verdict: Runtime Error):
import math as mt
import numpy as np

string = input()
use = string.split('x')
word =''
for x in use:
    word += x
i = 0
n = len(word) - 1
while i < n:
    if word[i] != word[n]:
        print(-1)
        exit()
    i += 1
    n -= 1
if len(word) % 2 == 0:
    fh = []
    i = 0
    mid = int(len(word)/2)
    count = 0
    n = len(string) - 1
    for x in string:
        if x == word[i]:
            i += 1
            fh.append(count)
            count = 0
            if i == mid:
                break
        else:
            count += 1
    i = len(word) - 1
    lh = []
    count = 0
    while i != mid - 1:
        if string[n] == word[i]:
            i -= 1
            lh.append(count)
            count = 0
        else:
            count += 1
        n -= 1
    print(0)
    # print(np.sum(np.abs(np.array(fh)-np.array(lh))))

else:
    fh = []
    i = 0
    mid = int((len(word) - 1)/2)
    count = 0
    n = len(string) - 1
    for x in string:
        if x == word[i]:
            i += 1
            fh.append(count)
            count = 0
            if i > mid:
                break
        else:
            count += 1
    i = len(word) - 1
    lh = []
    count = 0
    while i != mid - 1:
        if string[n] == word[i]:
            i -= 1
            lh.append(count)
            count = 0
        else:
            count += 1
        n -= 1
    print(0)
    #print(np.sum(np.abs(np.array(fh)-np.array(lh))))


Fixed submission:
import math as mt
import numpy as np

string = input()
collect = []
word = ''
count = 0
n = len(string)
i = 0
for x in string:
    if x != 'x':
        word += x
        collect.append(count)
        if i == n-1:
            collect.append(0)
        count = 0
    elif i == n-1:
        count += 1
        collect.append(count)
    else:
        count += 1
    i += 1

nl = len(word) - 1
i = 0
while i < nl:
    if word[i] != word[nl]:
        print(-1)
        exit()
    i += 1
    nl -=  1
nl = len(collect) - 1
i = 0
out = 0
while i < nl:
    out += np.abs(collect[i] - collect[nl])
    i += 1
    nl -= 1
print(out)

Buggy python submission (verdict: Runtime Error):
import math as mt
import numpy as np

string = input()
use = string.split('x')
word =''
for x in use:
    word += x
i = 0
n = len(word) - 1
while i < n:
    if word[i] != word[n]:
        print(-1)
        exit()
    i += 1
    n -= 1
for x in 1000000000:
    y = 1+1
if len(word) % 2 == 0:
    fh = []
    i = 0
    mid = int(len(word)/2)
    count = 0
    n = len(string) - 1
    for x in string:
        if x == word[i]:
            i += 1
            fh.append(count)
            count = 0
            if i == mid:
                break
        else:
            count += 1
    i = len(word) - 1
    lh = []
    count = 0
    while i != mid - 1:
        if string[n] == word[i]:
            i -= 1
            lh.append(count)
            count = 0
        else:
            count += 1
        n -= 1
    print(np.sum(np.abs(np.array(fh)-np.array(lh))))

else:
    fh = []
    i = 0
    mid = int((len(word) - 1)/2)
    count = 0
    n = len(string) - 1
    for x in string:
        if x == word[i]:
            i += 1
            fh.append(count)
            count = 0
            if i > mid:
                break
        else:
            count += 1
    i = len(word) - 1
    lh = []
    count = 0
    while i != mid - 1:
        if string[n] == word[i]:
            i -= 1
            lh.append(count)
            count = 0
        else:
            count += 1
        n -= 1

    print(np.sum(np.abs(np.array(fh)-np.array(lh))))


Fixed submission:
import math as mt
import numpy as np

string = input()
collect = []
word = ''
count = 0
n = len(string)
i = 0
for x in string:
    if x != 'x':
        word += x
        collect.append(count)
        if i == n-1:
            collect.append(0)
        count = 0
    elif i == n-1:
        count += 1
        collect.append(count)
    else:
        count += 1
    i += 1

nl = len(word) - 1
i = 0
while i < nl:
    if word[i] != word[nl]:
        print(-1)
        exit()
    i += 1
    nl -=  1
nl = len(collect) - 1
i = 0
out = 0
while i < nl:
    out += np.abs(collect[i] - collect[nl])
    i += 1
    nl -= 1
print(out)

Buggy python submission (verdict: Runtime Error):
import math as mt
import numpy as np

string = input()
use = string.split('x')
word =''
for x in use:
    word += x
i = 0
n = len(word) - 1
while i < n:
    if word[i] != word[n]:
        print(-1)
        exit()
    i += 1
    n -= 1

if len(word) % 2 == 0:
    fh = []
    i = 0
    mid = int(len(word)/2)
    count = 0
    n = len(string) - 1
    for x in string:
        if x == word[i]:
            i += 1
            fh.append(count)
            count = 0
            if i == mid:
                break
        else:
            count += 1
    i = len(word) - 1
    lh = []
    count = 0
    while i != mid - 1:
        if string[n] == word[i]:
            i -= 1
            lh.append(count)
            count = 0
        else:
            count += 1
        n -= 1
    print(np.sum(np.abs(np.array(fh)-np.array(lh))))

else:
    fh = []
    i = 0
    mid = int((len(word) - 1)/2)
    count = 0
    n = len(string) - 1
    for x in string:
        if x == word[i]:
            i += 1
            fh.append(count)
            count = 0
            if i > mid:
                break
        else:
            count += 1
    i = len(word) - 1
    lh = []
    count = 0
    while i != mid - 1:
        if string[n] == word[i]:
            i -= 1
            lh.append(count)
            count = 0
        else:
            count += 1
        n -= 1
    if len(fh) != len(lh):
        for x in 1000000000:
            y = 1+1
    print(np.sum(np.abs(np.array(fh)-np.array(lh))))


Fixed submission:
import math as mt
import numpy as np

string = input()
collect = []
word = ''
count = 0
n = len(string)
i = 0
for x in string:
    if x != 'x':
        word += x
        collect.append(count)
        if i == n-1:
            collect.append(0)
        count = 0
    elif i == n-1:
        count += 1
        collect.append(count)
    else:
        count += 1
    i += 1

nl = len(word) - 1
i = 0
while i < nl:
    if word[i] != word[nl]:
        print(-1)
        exit()
    i += 1
    nl -=  1
nl = len(collect) - 1
i = 0
out = 0
while i < nl:
    out += np.abs(collect[i] - collect[nl])
    i += 1
    nl -= 1
print(out)

Buggy python submission (verdict: Runtime Error):
import math as mt
import numpy as np

string = input()
use = string.split('x')
word =''
for x in use:
    word += x
i = 0
n = len(word) - 1
while i < n:
    if word[i] != word[n]:
        print(-1)
        exit()
    i += 1
    n -= 1

if len(word) % 2 == 0:
    fh = []
    i = 0
    mid = int(len(word)/2)
    count = 0
    n = len(string) - 1
    for x in string:
        if x == word[i]:
            i += 1
            fh.append(count)
            count = 0
            if i == mid:
                break
        else:
            count += 1
    i = len(word) - 1
    lh = []
    count = 0
    while i != mid - 1:
        if string[n] == word[i]:
            i -= 1
            lh.append(count)
            count = 0
        else:
            count += 1
        n -= 1
    print(np.sum(np.abs(np.array(fh)-np.array(lh))))

else:
    fh = []
    i = 0
    mid = int((len(word) - 1)/2)
    count = 0
    n = len(string) - 1
    for x in string:
        if x == word[i]:
            i += 1
            fh.append(count)
            count = 0
            if i > mid:
                break
        else:
            count += 1
    i = len(word) - 1
    lh = []
    count = 0
    while i != mid - 1:
        if string[n] == word[i]:
            i -= 1
            lh.append(count)
            count = 0
        else:
            count += 1
        n -= 1
    print(np.sum(np.abs(np.array(fh)-np.array(lh))))


Fixed submission:
import math as mt
import numpy as np

string = input()
collect = []
word = ''
count = 0
n = len(string)
i = 0
for x in string:
    if x != 'x':
        word += x
        collect.append(count)
        if i == n-1:
            collect.append(0)
        count = 0
    elif i == n-1:
        count += 1
        collect.append(count)
    else:
        count += 1
    i += 1

nl = len(word) - 1
i = 0
while i < nl:
    if word[i] != word[nl]:
        print(-1)
        exit()
    i += 1
    nl -=  1
nl = len(collect) - 1
i = 0
out = 0
while i < nl:
    out += np.abs(collect[i] - collect[nl])
    i += 1
    nl -= 1
print(out)