Buggy python submission (verdict: Runtime Error):
N = int(input())

# F(A, B)を定義する
def F(A, B):
    A = str(A)
    B = str(B)
    if len(A) >= len(B):
        return len(A)
    else:
        return len(B)

minimumList = []
for a in range(1, int(N**0.5) + 1):
    if N % a == 0:
        b = N // a
        minimumList.append(F(a, b))
print(min(minimumList))

Fixed submission:
import numpy as np
C = []
for i in range(3):
    c_horizontal = list(map(int, input().split()))
    C.append(c_horizontal)

## Ax = C
A = np.array([
    [1, 0, 0, 1, 0, 0],
    [1, 0, 0, 0, 1, 0],
    [1, 0, 0, 0, 0, 1],
    [0, 1, 0, 1, 0, 0],
    [0, 1, 0, 0, 1, 0],
    [0, 1, 0, 0, 0, 1],
    [0, 0, 1, 1, 0, 0],
    [0, 0, 1, 0, 1, 0],
    [0, 0, 1, 0, 0, 1] ])
# 拡大係数行列
Ab = np.array([
    [1, 0, 0, 1, 0, 0, C[0][0]],
    [1, 0, 0, 0, 1, 0, C[0][1]],
    [1, 0, 0, 0, 0, 1, C[0][2]],
    [0, 1, 0, 1, 0, 0, C[1][0]],
    [0, 1, 0, 0, 1, 0, C[1][1]],
    [0, 1, 0, 0, 0, 1, C[1][2]],
    [0, 0, 1, 1, 0, 0, C[2][0]],
    [0, 0, 1, 0, 1, 0, C[2][1]],
    [0, 0, 1, 0, 0, 1, C[2][2]] ])

# 係数行列と拡大係数行列のランクをそれぞれ求める
rankA = np.linalg.matrix_rank(A)
rankAb = np.linalg.matrix_rank(Ab)

if rankA == rankAb:
    print('Yes')
else:
    print('No')

# print(C)
# A = [0] * 3
# B = [0] * 3
# flgList = []
# for k in range(3):
#     flgHorizontal = [False] * 3
#     flgList.append(flgHorizontal)
# ## c(i, j) = a(i) + b(j)
# for i in range(3):
#     for a in range(101):
#         A[i] = a
#         for j in range(3):
#             B[j] = C[i][j] - A[i]
#                 if C[i][j] == A[i] + B[j]:
#                     print(C[i][j], A[i], B[j])
#                     flgList[i][j] = True
# print(flgList)
# determinantList = [False] * 3
# for m in range(3):
#     if all(flgList[m]):
#         determinantList[m] = True

# if all(determinantList):
#     print('Yes')
# else:
#     print('No')C

Buggy python submission (verdict: Runtime Error):
N = int(input())

# F(A, B)を定義する
def F(A, B):
    A = str(A)
    B = str(B)
    if len(A) >= len(B):
        return len(A)
    else:
        return len(B)

minimumList = []
for a in range(1, int(N**0.5) + 1):
    if N % a == 0:
        b = N // a  # 商
        minimumList.append(F(a, b))
print(min(minimumList))

Fixed submission:
import numpy as np
C = []
for i in range(3):
    c_horizontal = list(map(int, input().split()))
    C.append(c_horizontal)

## Ax = C
A = np.array([
    [1, 0, 0, 1, 0, 0],
    [1, 0, 0, 0, 1, 0],
    [1, 0, 0, 0, 0, 1],
    [0, 1, 0, 1, 0, 0],
    [0, 1, 0, 0, 1, 0],
    [0, 1, 0, 0, 0, 1],
    [0, 0, 1, 1, 0, 0],
    [0, 0, 1, 0, 1, 0],
    [0, 0, 1, 0, 0, 1] ])
# 拡大係数行列
Ab = np.array([
    [1, 0, 0, 1, 0, 0, C[0][0]],
    [1, 0, 0, 0, 1, 0, C[0][1]],
    [1, 0, 0, 0, 0, 1, C[0][2]],
    [0, 1, 0, 1, 0, 0, C[1][0]],
    [0, 1, 0, 0, 1, 0, C[1][1]],
    [0, 1, 0, 0, 0, 1, C[1][2]],
    [0, 0, 1, 1, 0, 0, C[2][0]],
    [0, 0, 1, 0, 1, 0, C[2][1]],
    [0, 0, 1, 0, 0, 1, C[2][2]] ])

# 係数行列と拡大係数行列のランクをそれぞれ求める
rankA = np.linalg.matrix_rank(A)
rankAb = np.linalg.matrix_rank(Ab)

if rankA == rankAb:
    print('Yes')
else:
    print('No')

# print(C)
# A = [0] * 3
# B = [0] * 3
# flgList = []
# for k in range(3):
#     flgHorizontal = [False] * 3
#     flgList.append(flgHorizontal)
# ## c(i, j) = a(i) + b(j)
# for i in range(3):
#     for a in range(101):
#         A[i] = a
#         for j in range(3):
#             B[j] = C[i][j] - A[i]
#                 if C[i][j] == A[i] + B[j]:
#                     print(C[i][j], A[i], B[j])
#                     flgList[i][j] = True
# print(flgList)
# determinantList = [False] * 3
# for m in range(3):
#     if all(flgList[m]):
#         determinantList[m] = True

# if all(determinantList):
#     print('Yes')
# else:
#     print('No')C