Buggy python submission (verdict: Runtime Error):
import statistics
import math
N = int(input())
AS = input().split()
AS = [int(i) for i in AS]
BS = [int(AS[j-1] - j) for  i in range(1,N+1)]
b = int('{0:8.0f}'.format(statistics.median(BS)))
result_a = 0
result_b = 0
result_c = 0
for j in range (1, N+1):
    result_a += abs(int(AS[j-1]) - b - j)
for j in range (1, N+1):
    result_b += abs(int(AS[j-1]) - b - 1 - j)
for j in range (1, N+1):
    result_c += abs(int(AS[j-1]) - b + 1 - j)
print (int(min(result_a,result_b,result_c)))

Fixed submission:
N = int(input())
AS = input().split()
AS = [int(i) for i in AS]
BS = [int(AS[j-1] - j) for j in range(1,N+1)]
BS_s = BS.sort()
b = BS[N//2]
result_a = 0
result_b = 0
result_c = 0
for j in range (1, N+1):
    result_a += abs(int(AS[j-1]) - b - j)
for j in range (1, N+1):
    result_b += abs(int(AS[j-1]) - b - 1 - j)
for j in range (1, N+1):
    result_c += abs(int(AS[j-1]) - b + 1 - j)
print (int(min(result_a,result_b,result_c)))

Buggy python submission (verdict: Runtime Error):
import statistics
import math
N = int(input())
AS = input().split()
AS = [int(i) for i in AS]
BS = [int(AS[j-1] - j) for  i in range(1,N+1)]
b = int('{0:8.0f}'.format(statistics.median(BS)))
result_a = 0
result_b = 0
result_c = 0
for j in range (1, N+1):
    result_a += abs(int(AS[j-1]) - b - j)
for j in range (1, N+1):
    result_b += abs(int(AS[j-1]) - b - 1 - j)
for j in range (1, N+1):
    result_c += abs(int(AS[j-1]) - b + 1 - j)
print (min(result_a,result_b,result_c))

Fixed submission:
N = int(input())
AS = input().split()
AS = [int(i) for i in AS]
BS = [int(AS[j-1] - j) for j in range(1,N+1)]
BS_s = BS.sort()
b = BS[N//2]
result_a = 0
result_b = 0
result_c = 0
for j in range (1, N+1):
    result_a += abs(int(AS[j-1]) - b - j)
for j in range (1, N+1):
    result_b += abs(int(AS[j-1]) - b - 1 - j)
for j in range (1, N+1):
    result_c += abs(int(AS[j-1]) - b + 1 - j)
print (int(min(result_a,result_b,result_c)))

Buggy python submission (verdict: Time Limit Exceeded):
N = int(input())
AS = input().split()
for i in AS:
    i = int(i)
result = 0
result_f = 0
result_rf = 0
for j in range (1, N+1):
    result += abs(int(AS[j-1]) - 0 - j)
for j in range (1, N+1):
    result_f += abs(int(AS[j-1]) - 1 - j)
for j in range (1, N+1):
    result_rf += abs(int(AS[j-1]) - ( - 1) - j)
if result < result_f and result < result_rf:
    print(result)
else:
    old_list= [0]
    b = 1
    while(not b in old_list):
        counter = 0
        for j in range (1,N+1):
            counter += abs(int(AS[j-1]) - b - j)
        if counter <= result:
            old_list.append(b)
            b += 1
            result = counter
        else:
            old_list.append(b)
            continue
    result_1 = result
    b = -1
    while(not b in old_list):
        counter = 0
        for j in range (1,N+1):
            counter += abs(int(AS[j-1]) - b - j)
        if counter <= result:
            old_list.append(b)
            b -= 1
            result = counter
        else:
            old_list.append(b)
            continue
    result_2 = result
    print (min(result_1,result_2))

Fixed submission:
N = int(input())
AS = input().split()
AS = [int(i) for i in AS]
BS = [int(AS[j-1] - j) for j in range(1,N+1)]
BS_s = BS.sort()
b = BS[N//2]
result_a = 0
result_b = 0
result_c = 0
for j in range (1, N+1):
    result_a += abs(int(AS[j-1]) - b - j)
for j in range (1, N+1):
    result_b += abs(int(AS[j-1]) - b - 1 - j)
for j in range (1, N+1):
    result_c += abs(int(AS[j-1]) - b + 1 - j)
print (int(min(result_a,result_b,result_c)))

Buggy python submission (verdict: Time Limit Exceeded):
N = int(input())
AS = input().split()
for i in AS:
    i = int(i)
abs_list = []
for i in range (-int(max(AS))-1, int(max(AS)) + 1):
    counter = 0
    for j in range (1,N+1):
        counter += abs(int(AS[j-1]) - i - j)
    abs_list.append(counter)
print(min(abs_list))

Fixed submission:
N = int(input())
AS = input().split()
AS = [int(i) for i in AS]
BS = [int(AS[j-1] - j) for j in range(1,N+1)]
BS_s = BS.sort()
b = BS[N//2]
result_a = 0
result_b = 0
result_c = 0
for j in range (1, N+1):
    result_a += abs(int(AS[j-1]) - b - j)
for j in range (1, N+1):
    result_b += abs(int(AS[j-1]) - b - 1 - j)
for j in range (1, N+1):
    result_c += abs(int(AS[j-1]) - b + 1 - j)
print (int(min(result_a,result_b,result_c)))