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def bin(n):
s=""
while n!=0:
if n%2==1:
s+="1"
n//=2
elif n%2==0:
s+='0'
n//=2
return s
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def to_int(binary):
to_eval = "int(0b"
for i in binary:
to_eval += i
to_eval += ")"
return eval(to_eval)