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2 years ago
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S=input().split()
#print(S)
for i in range (len(S)):
    S[i]=ord(S[i])
#print(S)
x=0
P=[]
if S[0]>S[1]:
    P.append(S[0])
    P.append(";")
for i in range (len(S)-2):
    if S[i]<S[i+1]:
        P.append(S[i])
    if S[i]<S[i+1] and S[i+1]>S[i+2]:
        P.append(S[i+1])
        P.append(";")
    if S[i]<S[i-1] and S[i]>S[i+1]:
        P.append(S[i])
        P.append(";")

if S[len(S)-1]>S[len(S)-2]:
    P.append(S[len(S)-2])
    P.append(S[len(S)-1])
    P.append(";")
if S[len(S)-1]<S[len(S)-2]:
    P.append(S[len(S)-1])
    P.append(";")

wynik=0
for i in range (len(P)):
    if P[i]==";":
        wynik+=1
        
        
    
#print(P)
print(wynik)
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