Lehmät

n, m = input().split()
n = int(n)
m = int(m)
counter = 0

for f in range(m):
    x = str(input())
    z = 0
    for letter in x:
        if letter == "*":
            if z == 1:
                z = 0
            elif z == 0:
                z = 1
        if z == 1:
            if letter == "@":
                counter =+ 1

print(counter)

Test 1

Group: 1, 2

Verdict: ACCEPTED

Test 2

Group: 1, 2

Verdict: ACCEPTED

Test 3

Group: 1, 2

Verdict: RUNTIME ERROR

Traceback (most recent call last):
  File "/box/input/code.py", line 7, in <module>
    x...

Test 4

Group: 1, 2

Verdict: WRONG ANSWER

Test 5

Group: 1, 2

Verdict: WRONG ANSWER

Test 6

Group: 2

Verdict: WRONG ANSWER

Test 7

Group: 2

Verdict: WRONG ANSWER

Test 8

Group: 2

Verdict: WRONG ANSWER

Test 9

Group: 2

Verdict: WRONG ANSWER