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- f=open('24.txt')
- s=f.readline().strip()
- k=0
- ka=0
- for i in range(len(s)-2):
- if s[i]!=s[i+1] and s[i]!=s[i+2] and s[i+1]!=s[i+2]:
- if s[i]=='a' or s[i+1]!='a' or s[i+2]!='a':
- ka+=1
- else:
- k+=1
- print(abs(k-ka))
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