коробки с чередованием

data = open('2681493.txt').readlines()
n = list(map(int, data[0].split()))
a = [[], []]
for e in data[1:]:
    if len(e.split()) == 2:
        x, y = map(int, e.split())
        a[0].append(x)
        a[1].append(y)
    else:
        x = int(e)
        a[0].append(x)
i = [0, 0]
f = 0
answ_kol1 = 1
answ_lst1 = a[0][0]
while i[f^1] < n[f^1]:
    if a[f][i[f]] - a[f^1][i[f^1]] >= 5:
        answ_kol1 = answ_kol1 + 1
        answ_lst1 = a[f^1][i[f^1]]
        i[f] += 1
        f ^= 1
    else:
        i[f^1] += 1
i = [0, 0]
f = 1
answ_kol2 = 1
answ_lst2 = a[0][0]
while i[f^1] < n[f^1]:
    if a[f][i[f]] - a[f^1][i[f^1]] >= 5:
        answ_kol2 = answ_kol2 + 1
        answ_lst2 = a[f^1][i[f^1]]
        i[f] += 1
        f ^= 1
    else:
        i[f^1] += 1
print(answ_kol1, answ_lst1)
print(answ_kol2, answ_lst2)