N = int(input())
win = []

for i in range(N):
    row = list(input())
    win.append(row)

#for i in range(N):print(*win[i], sep = "")
#print("***")

for i in range(N):
    if win[0][i] == "-":
        win[0][i] = "o"
        win[i][0] = "x"

win0 = win[0].count("o")

#for i in range(N):print(*win[i], sep = "")
#print("***")
#dummy = [win[i][j] for i in range(N) for j in range(N)]

#for i in range(N):print(*win[i], sep = "")
#print("***")

cnt = 1
for i in range(1, N):
    if win[i].count("o") > win0:
        cnt += 1

print(cnt)