N = int(input())
S = input()
ans = 1
for i in range(N-1):
    if(S[i] != S[i+1]):
        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]):
        ans += 1 i range(N-1) range N-1 N 1 if(S[i] != S[i+1]):
        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 ans += 1 1 ans N = int(input()) int(input()) N S = input() input() S ans = 1 1 ans
N = int(input())
S = input()
ans = 1
for i in range(N-1):
    if(S[i] != S[i+1]):
        ans += 1
print(ans)