Buggy python submission (verdict: Time Limit Exceeded):
k, n = map(int, input().split())
a = list(map(int, input().split()))

d = [a[i] - a[i-1] for i in range(1, n)]
d.insert(0, a[0])
d.append(k - a[-1])
sum_d = sum(d)

most_min_path = 10000

for i in range(n):
    if i == 0:
        normal_ck = sum_d - d[i] - d[-1]
        reverse_ck = sum_d - d[i+1]
    elif i == n - 1:
        normal_ck = sum_d - d[i]
        reverse_ck = sum_d - d[i+1] - d[0]
    elif 0 < i < n - 1:
        normal_ck = sum(d) - d[i]
        reverse_ck = sum(d) - d[i+1]

    min_ck = normal_ck if normal_ck < reverse_ck else reverse_ck
    if most_min_path > min_ck:
        most_min_path = min_ck

print(most_min_path)

Fixed submission:
k, n = map(int, input().split())
a = list(map(int, input().split()))
a.append(a[0] + k)

d = [a[i+1] - a[i] for i in range(n)]
l = 0
for i in range(n):
    l = max(l, a[i+1] - a[i])
print(k - l)

Buggy python submission (verdict: Time Limit Exceeded):
k, n = map(int, input().split())
a = list(map(int, input().split()))

d = [a[i] - a[i-1] for i in range(1, n)]
d.insert(0, a[0])
d.append(k - a[-1])
sum_d = sum(d)

most_min_path = 10000

for i in range(n):
    if i == 0:
        normal_ck = sum_d - d[i] - d[-1]
        reverse_ck = sum_d - d[i+1]
    elif i == n - 1:
        normal_ck = sum(d) - d[i]
        reverse_ck = sum(d) - d[i+1] - d[0]
    elif 0 < i < n - 1:
        normal_ck =  sum(d) - d[i]
        reverse_ck = sum(d) - d[i+1]

    min_ck = normal_ck if normal_ck < reverse_ck else reverse_ck
    if most_min_path > min_ck:
        most_min_path = min_ck

print(most_min_path)

Fixed submission:
k, n = map(int, input().split())
a = list(map(int, input().split()))
a.append(a[0] + k)

d = [a[i+1] - a[i] for i in range(n)]
l = 0
for i in range(n):
    l = max(l, a[i+1] - a[i])
print(k - l)

Buggy python submission (verdict: Time Limit Exceeded):
k, n = map(int, input().split())
a = list(map(int, input().split()))

d = [a[i] - a[i-1] for i in range(1, n)]
d.insert(0, a[0])
d.append(k - a[-1])
sum_d = sum(d)

most_min_path = 10000

for i in range(n):
    if i == 0:
        normal_ck = sum_d - d[i] - d[-1]
        reverse_ck = sum_d - d[i+1]
    elif i == n - 1:
        normal_ck = sum(d) - d[i]
        reverse_ck = sum(d) - d[i+1] - d[0]
    else:
        normal_ck = sum(d) - d[i]
        reverse_ck = sum(d) - d[i+1]

    min_ck = normal_ck if normal_ck < reverse_ck else reverse_ck
    if most_min_path > min_ck:
        most_min_path = min_ck

print(most_min_path)

Fixed submission:
k, n = map(int, input().split())
a = list(map(int, input().split()))
a.append(a[0] + k)

d = [a[i+1] - a[i] for i in range(n)]
l = 0
for i in range(n):
    l = max(l, a[i+1] - a[i])
print(k - l)

Buggy python submission (verdict: Time Limit Exceeded):
def main():
    k, n = map(int, input().split())
    a = list(map(int, input().split()))

    d = [a[i] - a[i-1] for i in range(1, n)]
    d.insert(0, a[0])
    d.append(k - a[-1])

    d = tuple(d)
    
    most_min_path = 10000

    for i in range(n):
        if i == 0:
            normal_ck = sum(d) - d[i] - d[-1]
            reverse_ck = sum(d) - d[i+1]
        elif i == n - 1:
            normal_ck = sum(d) - d[i]
            reverse_ck = sum(d) - d[i+1] - d[0]
        else:
            normal_ck = sum(d) - d[i]
            reverse_ck = sum(d) - d[i+1]

        min_ck = normal_ck if normal_ck < reverse_ck else reverse_ck
        if most_min_path > min_ck:
            most_min_path = min_ck

    print(most_min_path)


if __name__ == '__main__':
    main()

Fixed submission:
k, n = map(int, input().split())
a = list(map(int, input().split()))
a.append(a[0] + k)

d = [a[i+1] - a[i] for i in range(n)]
l = 0
for i in range(n):
    l = max(l, a[i+1] - a[i])
print(k - l)

Buggy python submission (verdict: Time Limit Exceeded):
def main():
    k, n = map(int, input().split())
    a = list(map(int, input().split()))

    d = [a[i] - a[i-1] for i in range(1, n)]
    d.insert(0, a[0])
    d.append(k - a[-1])

    d = tuple(d)

    most_min_path = 10000

    for i in range(n):
        if i == 0:
            normal_ck = sum(d) - d[i] - d[-1]
            reverse_ck = sum(d) - d[i+1]
        elif i == n - 1:
            normal_ck = sum(d) - d[i]
            reverse_ck = sum(d) - d[i+1] - d[0]
        else:
            normal_ck = sum(d) - d[i]
            reverse_ck = sum(d) - d[i+1]

        min_ck = normal_ck if normal_ck < reverse_ck else reverse_ck
        if most_min_path > min_ck:
            most_min_path = min_ck

    print(most_min_path)


if __name__ == '__main__':
    main()

Fixed submission:
k, n = map(int, input().split())
a = list(map(int, input().split()))
a.append(a[0] + k)

d = [a[i+1] - a[i] for i in range(n)]
l = 0
for i in range(n):
    l = max(l, a[i+1] - a[i])
print(k - l)

Buggy python submission (verdict: Time Limit Exceeded):
def main():
    k, n = map(int, input().split())
    a = list(map(int, input().split()))

    d = [a[i] - a[i-1] for i in range(1, n)]
    d.insert(0, a[0])
    d.append(k - a[-1])

    d = tuple(d)

    most_min_path = 10000

    for i in range(n):
        if i == 0:
            normal_ck = sum(d) - d[i] - d[-1]
            reverse_ck = sum(d) - d[i+1]
        elif i == n - 1:
            normal_ck = sum(d) - d[i]
            reverse_ck = sum(d) - d[i+1] - d[0]
        else:
            normal_ck = sum(d) - d[i]
            reverse_ck = sum(d) - d[i+1]

        if normal_ck > reverse_ck:
            min_ck = reverse_ck
        else:
            min_ck = normal_ck

        if most_min_path > min_ck:
            most_min_path = min_ck

    print(most_min_path)


if __name__ == '__main__':
    main()

Fixed submission:
k, n = map(int, input().split())
a = list(map(int, input().split()))
a.append(a[0] + k)

d = [a[i+1] - a[i] for i in range(n)]
l = 0
for i in range(n):
    l = max(l, a[i+1] - a[i])
print(k - l)

Buggy python submission (verdict: Time Limit Exceeded):
k, n = map(int, input().split())
a = list(map(int, input().split()))

d = [a[i] - a[i-1] for i in range(1, n)]
d.insert(0, a[0])
d.append(k - a[-1])

d = tuple(d)

most_min_path = 10000

for i in range(n):
    if i == 0:
        normal_ck = sum(d) - d[i] - d[-1]
        reverse_ck = sum(d) - d[i+1]
    elif i == n - 1:
        normal_ck = sum(d) - d[i]
        reverse_ck = sum(d) - d[i+1] - d[0]
    else:
        normal_ck = sum(d) - d[i]
        reverse_ck = sum(d) - d[i+1]
    if normal_ck > reverse_ck:
        min_ck = reverse_ck
    else:
        min_ck = normal_ck
    
    if most_min_path > min_ck:
        most_min_path = min_ck

print(most_min_path)

Fixed submission:
k, n = map(int, input().split())
a = list(map(int, input().split()))
a.append(a[0] + k)

d = [a[i+1] - a[i] for i in range(n)]
l = 0
for i in range(n):
    l = max(l, a[i+1] - a[i])
print(k - l)

Buggy python submission (verdict: Time Limit Exceeded):
k, n = map(int, input().split())
a = list(map(int, input().split()))
d = [a[0]]

for i in range(1, n):
    d.append(a[i] - a[i-1])
    
d.append(k - a[-1])
d = tuple(d)

most_min_path = 10000

for i in range(n):
    if i == 0:
        normal_ck = sum(d) - d[i] - d[-1]
        reverse_ck = sum(d) - d[i+1]
    elif i == n - 1:
        normal_ck = sum(d) - d[i]
        reverse_ck = sum(d) - d[i+1] - d[0]
    else:
        normal_ck = sum(d) - d[i]
        reverse_ck = sum(d) - d[i+1]
    if normal_ck > reverse_ck:
        min_ck = reverse_ck
    else:
        min_ck = normal_ck
    
    if most_min_path > min_ck:
        most_min_path = min_ck

print(most_min_path)

Fixed submission:
k, n = map(int, input().split())
a = list(map(int, input().split()))
a.append(a[0] + k)

d = [a[i+1] - a[i] for i in range(n)]
l = 0
for i in range(n):
    l = max(l, a[i+1] - a[i])
print(k - l)

Buggy python submission (verdict: Time Limit Exceeded):
k, n = map(int, input().split())
a = list(map(int, input().split()))
d = [a[0]]

for i in range(1, n):
    d.append(a[i] - a[i-1])
    
d.append(k - a[-1])

most_min_path = 10000

for i in range(n):
    if i == 0:
        normal_ck = sum(d) - d[i] - d[-1]
        reverse_ck = sum(d) - d[i+1]
    elif i == n - 1:
        normal_ck = sum(d) - d[i]
        reverse_ck = sum(d) - d[i+1] - d[0]
    else:
        normal_ck = sum(d) - d[i]
        reverse_ck = sum(d) - d[i+1]
    if normal_ck > reverse_ck:
        min_ck = reverse_ck
    else:
        min_ck = normal_ck
    
    if most_min_path > min_ck:
        most_min_path = min_ck

print(most_min_path)

Fixed submission:
k, n = map(int, input().split())
a = list(map(int, input().split()))
a.append(a[0] + k)

d = [a[i+1] - a[i] for i in range(n)]
l = 0
for i in range(n):
    l = max(l, a[i+1] - a[i])
print(k - l)