dic=['c=','c-','dz=','d-','lj','nj','s=','z=']
cro=['č','ć','dž','đ','lj','nj','š','ž']
word=input()
cnt=0
for i in range(len(dic)):
word=word.replace(dic[i],cro[i])
i=0
while(i<len(word)-1):
if word[i]+word[i+1] in cro:
i+=1
cnt+=1
i+=1
if(i==len(word)-1):
cnt+=1
print(cnt)
ZGljPVsnYz0nLCdjLScsJ2R6PScsJ2QtJywnbGonLCduaicsJ3M9Jywnej0nXQpjcm89WyfEjScsJ8SHJywnZMW+JywnxJEnLCdsaicsJ25qJywnxaEnLCfFviddCndvcmQ9aW5wdXQoKQpjbnQ9MApmb3IgaSBpbiByYW5nZShsZW4oZGljKSk6Cgl3b3JkPXdvcmQucmVwbGFjZShkaWNbaV0sY3JvW2ldKQppPTAKd2hpbGUoaTxsZW4od29yZCktMSk6CglpZiB3b3JkW2ldK3dvcmRbaSsxXSBpbiBjcm86CgkJaSs9MQoJY250Kz0xCglpKz0xCglpZihpPT1sZW4od29yZCktMSk6CgkJY250Kz0xCnByaW50KGNudCk=