Buggy python submission (verdict: Time Limit Exceeded):
N = int(input())
S = [input() for i in range(N)]
r = N*(N-1)//2
ans = 0
for i in range(N):
    g = 0
    for j in range(N):
        ji = (j+i) % N
        for k in range(j+1, N):
            if S[j][(k+i)%N] == S[k][ji]:
                g += 1
    if g == r:
        ans += 1
    for j in range(N-1):
        ji = (j+i) % N
        for k in range(N-1):
            if S[(1+k+j)%N][ji] == S[j][(ji+k+1)%N]:
                g += 1
            if S[(j+k)%N][ji] == S[j][(ji+k)%N]:
                g -= 1
        if g == r:
            ans += 1
print(ans)


Fixed submission:
N = int(input())
S = [input() for i in range(N)]
r = N*(N-1)//2
ans = 0
for i in range(N):
    g = 0
    for j in range(N):
        ji = (j+i) % N
        for k in range(j+1, N):
            if S[j][k+i-N] == S[k][ji]:
                g += 1
    if g == r:
        ans += 1
    for j in range(N-1):
        ji = (j+i) % N
        for k in range(N-1):
            if S[1+k+j-N][ji] == S[j][ji+k+1-N]:
                g += 1
            if S[j+k-N][ji] == S[j][ji+k-N]:
                g -= 1
        if g == r:
            ans += 1
print(ans)

Buggy python submission (verdict: Time Limit Exceeded):
N = int(input())
S = [input() for i in range(N)]
r = N*(N-1)//2
ans = 0
for i in range(N):
    g = 0
    for j in range(N):
        for k in range(j+1, N):
            if S[j][(k+i)%N] == S[k][(j+i)%N]:
                g += 1
    if g == r:
        ans += 1
    for j in range(N-1):
        for k in range(N-1):
            if S[(1+k+j)%N][(j+i)%N] == S[j][(j+i+k+1)%N]:
                g += 1
            if S[(j+k)%N][(j+i)%N] == S[j][(j+i+k)%N]:
                g -= 1
        if g == r:
            ans += 1
print(ans)


Fixed submission:
N = int(input())
S = [input() for i in range(N)]
r = N*(N-1)//2
ans = 0
for i in range(N):
    g = 0
    for j in range(N):
        ji = (j+i) % N
        for k in range(j+1, N):
            if S[j][k+i-N] == S[k][ji]:
                g += 1
    if g == r:
        ans += 1
    for j in range(N-1):
        ji = (j+i) % N
        for k in range(N-1):
            if S[1+k+j-N][ji] == S[j][ji+k+1-N]:
                g += 1
            if S[j+k-N][ji] == S[j][ji+k-N]:
                g -= 1
        if g == r:
            ans += 1
print(ans)

Buggy python submission (verdict: Time Limit Exceeded):
N = int(input())
S = [input() for i in range(N)]
r = N*(N-1)//2
ans = 0
for i in range(N):
    g = 0
    for j in range(N):
        for k in range(j+1, N):
            if S[j][(k+i)%N] == S[k][(j+i)%N]:
                g += 1
    if g == r:
        ans += 1
    for j in range(N-1):
        for k in range(N-1):
            if S[(1+k+j)%N][(j+i)%N] == S[j][(j+i+k+1)%N]:
                g += 1
            if S[(j+k)%N][(j+i)%N] == S[j][(j+i+k)%N]:
                g -= 1
        if g == r:
            ans += 1
print(ans)


Fixed submission:
N = int(input())
S = [input() for i in range(N)]
r = N*(N-1)//2
ans = 0
for i in range(N):
    g = 0
    for j in range(N):
        ji = (j+i) % N
        for k in range(j+1, N):
            if S[j][k+i-N] == S[k][ji]:
                g += 1
    if g == r:
        ans += 1
    for j in range(N-1):
        ji = (j+i) % N
        for k in range(N-1):
            if S[1+k+j-N][ji] == S[j][ji+k+1-N]:
                g += 1
            if S[j+k-N][ji] == S[j][ji+k-N]:
                g -= 1
        if g == r:
            ans += 1
print(ans)