n= int(input())
s = input()
ans = 1
for i in range(n-1):
    if s[i]==s[i+1]:
        pass
    else:
        ans += 1

print(ans) n= int(input()) n int(input()) int input() input s = input() s input() input ans = 1 ans 1 for i in range(n-1):
    if s[i]==s[i+1]:
        pass
    else:
        ans += 1 i range(n-1) range n-1 n 1 if s[i]==s[i+1]:
        pass
    else:
        ans += 1 s[i]==s[i+1] s[i] s i s[i+1] s i+1 i 1 ans += 1 ans 1 print(ans) print ans n= int(input()) int(input()) n s = input() input() s ans += 1 1 ans ans = 1 1 ans
n= int(input())
s = input()
ans = 1
for i in range(n-1):
    if s[i]==s[i+1]:
        pass
    else:
        ans += 1

print(ans)