# import math
# s = "abcdefg"
# print(s[:0:-1])
# l = [''] * 5
# l.append('0')
# l[0] = 'dad'
# print(l)
# print(2**32)da
# k = 3
# print([0, k][k > 2])
# s = "*9381.2473184623"
# print(['*', '.'] in s)
# print(str(+1234))
lis = ['1', '2', '3', '4']
for i, num in enumerate(lis):
    print(i, num)
print(7 // 2)
j = 3
j -= 1
print j
a, b = 1, 2
print a, b
