Lehmät

square = input()
y, x = int(square.split(" ")[0]), int(square.split(" ")[1])

square = []
for i in range(y):
    row = input()
    square.append(row)

# y, x = 5, 10
# square = [".........@", 
#           "@.*******.",
#           "..*.@.@.*.",
#           ".@*.@@@@*.",
#           "..*******."]

count = 0
for i in range(y):
    x1 = square[i].find("*")
    if x1 == -1:
        continue
    for j in range(x1+1, x+1):
        cur = square[i][j]
        if cur == "*":
            break         
        elif cur == "@":
            count += 1
        else:
            continue
print(count)

Test 1

Group: 1, 2

Verdict: ACCEPTED

Test 2

Group: 1, 2

Verdict: ACCEPTED

Test 3

Group: 1, 2

Verdict: ACCEPTED

Test 4

Group: 1, 2

Verdict: ACCEPTED

Test 5

Group: 1, 2

Verdict: ACCEPTED

Test 6

Group: 2

Verdict: ACCEPTED

Test 7

Group: 2

Verdict: ACCEPTED

Test 8

Group: 2

Verdict: ACCEPTED

Test 9

Group: 2

Verdict: ACCEPTED