import sys
input=sys.stdin.readline
s=input().rstrip()
a=1
b=0
k=s[0]
j=s[0]
for i in s:
if i!=k:
if i==j:
a+=1
k=i
else:
b+=1
k=i
print(min(a,b))
import sys
input=sys.stdin.readline
s=input().rstrip()
k=s[0]
res=0
for i in range(1, len(s)):
if s[i]!=k and s[i-1]==k:
res+=1
print(res)
접근방향
1
a = list(input())
b = a
i = 0
for i in range(len(a)-1) :
if a[i] == a[i+1] :
b[i] = []
else :
pass
zc = b.count('0')
oc = b.count('1')
print(min(zc,oc))
2
import sys
input = sys.stdin.readline
s = input().rstrip()
n = len(s)
res = 0
for i in range(1, n):
if s[i - 1] != s[i]:
res += 1
print((res + 1) // 2)