a=[1,2,3,4,5,6,7]
b=[12,14,13,15]
a.pop()
a.pop(4)
a.insert(2,0)
a.append("Sri")
a[5]=8
print (a[3])
b.extend(a)
print(a)
print(b)
YT1bMSwyLDMsNCw1LDYsN10KYj1bMTIsMTQsMTMsMTVdCmEucG9wKCkKYS5wb3AoNCkKYS5pbnNlcnQoMiwwKQphLmFwcGVuZCgiU3JpIikKYVs1XT04CnByaW50IChhWzNdKQpiLmV4dGVuZChhKQpwcmludChhKQpwcmludChiKQ==
3
[1, 2, 0, 3, 4, 8, 'Sri']
[12, 14, 13, 15, 1, 2, 0, 3, 4, 8, 'Sri']