KOI 2교시 1번
unknown
python
2 years ago
228 B
1
Indexable
Never
n = int(input()) a = list(map(int, input().split())) odd = list(filter(lambda x: a[x] % 2, range(n))) print(min( sum(odd) - len(odd) * (len(odd) - 1) // 2, len(odd) * (2 * n - len(odd) + 1) // 2 - sum(odd) - len(odd) ))