line = input();
ints = list(map(int, line.split()));
def print_list(msg, ll):
print(msg, end='', sep='');
for x in ints:
print(' ', x, end='', sep='');
print();
print_list('Before unique :', ints);
# unique
ints = list(set(ints));
print_list('After unique :', ints);
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