Lehmät

n = input()
n = n.split(' ')
d = []
count = 0
for g in range(0, int(n[0])):
    g = str(g)
    b = 'v',g
    d.append(b)
    g = int(g)
    d[g] = input()
for v in range(0, len(d)):
    arrange = list(d[v])
    for x in range( len(arrange),0,-1):
        x = x-1
        if(arrange[x] == '*'):
            if(arrange[x-1] == '*'):
                break
            del arrange[x]
            x = x-1
            for x in reversed(list(enumerate(arrange))):
                if x[1] == '@':
                    count += 1
                elif x[1] == '*':
                    break
            break
        del arrange[x]    
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