Run ID Author Problem Lang Verdict Time Memory Code Length Submit Time
78012 sh25_zhangyy 求和 Python3 Wrong Answer 27 MS 3676 KB 89 2025-12-26 15:15:59

Tests(0/1):

N = int(input()) if N % 2 == 0: print((N / 2 - 1) * N) else: print((N - 1) / 2 * N)

Judgement Protocol: