import re
n = int(input())
cnt = 0
L = re.split("[.!?]+",input())
for i in L:
cnt = 0
k = (i.strip()).split()
if k == []:
continue
for j in k:
if j[0].upper() == j[0]:
for jj in j:
if not (('A' <= jj and jj <= 'Z') or ('a' <= jj and jj <= 'z')):
break
else:
cnt+=1
print(cnt)