from ring import Ring
inp = [int(l.strip()) for l in open('input.txt').read()]
inp.extend(range(max(inp) + 1, 10**6 + 1))
r = Ring(inp)
curr = r.find(inp[0])
inp_min = min(inp)
for i in range(10**7):
tmp = r.remove(curr.nxt.val, 2)
destination_val = curr.val - 1
while not r.has(destination_val):
destination_val -= 1
if destination_val < inp_min:
destination_val = r.get_max_val()
break
r.insert(destination_val, tmp)
curr = curr.nxt
one = r.find(1)
print(one.nxt.val * one.nxt.nxt.val)
from ring import Ring
inp = [int(l.strip()) for l in open('input.txt').read()]
r = Ring(inp)
curr = r.find(inp[0])
inp_min = min(inp)
for i in range(100):
tmp = r.remove(curr.nxt.val, 2)
destination_val = curr.val - 1
while not r.has(destination_val):
destination_val -= 1
if destination_val < inp_min:
destination_val = r.get_max_val()
break
r.insert(destination_val, tmp)
curr = curr.nxt
print( ''.join( list(map(str, r.traverse(1)))[1:] ) )