13 lines
176 B
Python
13 lines
176 B
Python
s=input()
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count=0
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last=s[0]
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for i in range(1,len(s)):
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if not s[i]==last:
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count+=1
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last=s[i]
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if count%2==1:
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print(count//2+1)
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else:
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print(count//2)
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