int input ch k7 cv while if and 49 k7 max k7 elif max ch int input cv

n = int(input())
ch = 0
k7 = 0
cv = 0
m = 0
while n != 0:
    if n % 7 == 0 and n % 49 != 0:
        k7 = max(n, k7)
    elif n % 7 != 0:
        m = max(m, n)
    ch += 1
    n = int(input())
cv = m*k7
cr = int(input())
if cv == 0:
    print('input:', ch)
    print('reference value:', 1)
    print('calculated value:', cv)
    print('values true')
elif cr == cv:
    print('input:', ch)
    print('reference value:', cr)
    print('calculated value:', cv)
    print('values true')
else:
    print('input:', ch)
    print('reference value:', cr)
    print('calculated value:', cv)
    print('values false')