Ruudukko

from more_itertools import unique_everseen
from itertools import groupby

n = int(input())
merk = []
for a in range(n):
    merk.append(input())
merk = []

num = [i for i in "123456789"]

for a in range(0, len(merk)):
    sana = list(unique_everseen(merk[a]))
    n = 0
    for b in range(0, len(sana)):
        merk[a] = merk[a].replace(sana[b], num[n])
        n += 1
n = 0
for a in [len(list(group)) for key, group in groupby(sorted(merk))]:
    n += sum(list(range(1, a)))
print(n)  
    
      

Test 1

Verdict: RUNTIME ERROR

Traceback (most recent call last):
  File "input/code.py", line 1, in <module>
    from mo...

Test 2

Verdict: RUNTIME ERROR

Traceback (most recent call last):
  File "input/code.py", line 1, in <module>
    from mo...

Test 3

Verdict: RUNTIME ERROR

Traceback (most recent call last):
  File "input/code.py", line 1, in <module>
    from mo...

Test 4

Verdict: RUNTIME ERROR

Traceback (most recent call last):
  File "input/code.py", line 1, in <module>
    from mo...

Test 5

Verdict: RUNTIME ERROR

Traceback (most recent call last):
  File "input/code.py", line 1, in <module>
    from mo...

Test 6

Verdict: RUNTIME ERROR

Traceback (most recent call last):
  File "input/code.py", line 1, in <module>
    from mo...