A string S is
passed as the input. The program must remove all characters which appear more
than once. If all the characters in a string are occurring more than once, then
print -1 as output.
Input
Format:
The first line
contains the value of S.
Boundary
Conditions: 2 <= Length of S <= 100
Output
Format:
The string with
the characters occurring more than once removed.
Example
Input/Output 1:
Input:
level
Output:
v
Explanation: l and
e occur more than once. Hence they are removed.
Example
Input/Output 2:
Input:
ababab
Output:
-1
Solution:
s,c=input(),0
for i in s:
if s.count(i)==1:
print(i,end="")
else:
c+=1
if count==len(s):
print(-1)