20222207 - 统计连续字符

s=input() n=int(input()) count=0 r1=[] i=0 while i<len(s): j=i+1 while j<len(s) and s[i]==s[j]: j+=1 if j-i>=n:

    if s[i] not in r1:
        r1.append(s[i])
i=j

print(len(r1))