Vara,b,c: integer;beginreadln(a, b, c);write(a+b/2*sqr(c));end.
1) 15, 25, 35, 45
2) 15, 12
Вот код:
n, m = int(input()), int(input())
n += m
s1, s2 = set(), set()
for i in range(n):
student = (input())
if student in s1:
s1.remove(student)
s2.add(student)
else:
s1.add(student)
if len(s1) <= 0:
print('NO')
else:
print(len(s1))
Вот ссылка на код с отступами:https://pastebin.com/Ud5AwrSs