n=int(input())
s=input()

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

count=1
for i in range(n-1):
    if(s[i]==s[i+1]):
        continue
    else:
        count+=1 
print(count)