can anyone tell me whats wrong with this code.

Question

import sys
import collections

n = int(input().strip())
c = map(int,input().strip().split(''))
my_s =[]

for i in list(set(c)):
my_s.append(c.count(i))
total =0
for i in my_s:
if i>1:
i = i/2
total +=i
print (total)

Answer 1

import sys and import collections isn't needed, variable n isn't used. You can't use an empty sequence ('') for string.split(). c is a map object and doesn't have a method count(). for i in list(set(c)) isn't necessary, you can iterate over a set as well. You probably want to print total only once, so it shouldn't be indented