#!/usr/bin/python3

a = [1, 2, 3]

# 1. nacin
b = [item for item in a]
for i in range(len(b)):
	b[i] += 1
print(a)
print(b)

print("")

# 2. nacin
b = a
for i in range(len(b)):
	b[i] += 1
print(a)
print(b)