file = open('13.txt')
s = file.readline()
s = s[:-1]
f = [1] * len(s)
for i in range(1,len(s)):
    if int(s[i]) > int(s[i-1]):
        f[i] = f[i-1] + 1
    else:
        f[i] = 1
print(max(f))