a = [int(s) for s in open('17-1.txt')]

amax7 = max([x for x in a if x % 10 == 7])

s3 = []

for i in range (len(a) - 2):

troika = [a[i] , a[i+1] , a[i+2]]

aabssumm = abs(sum(troika))

alen = [x for x in troika if (abs(x)%10 == 7 and len(str(abs(x)))==3)]

arazrad = [str(abs(x))[0] for x in troika]

if arazrad[0] == arazrad[1] == arazrad[2]:

if aabssumm < amax7 and len(alen) > 0:

s3.append(abs(sum(troika)))

print(len(s3),max(s3))

def good(p,m):

t = [100 <= abs(x) < 1000 and str(x)[-1] == '7' for x in p]

pc = [str(abs(x))[0] for x in p]

return len(set(pc)) == 1 and any(t) and abs(sum(p)) < m

a = [int(s) for s in open('17-1.txt')]

m = max([x for x in a if str(x)[-1] == '7'])

r = [sum(a[i-2:i+1]) for i in range(2,len(a)) if good(a[i-2:i+1],m)]

print(len(r),abs(max(r)))