696脑筋急转弯简单derivationmedium
Consecutive Block With Sum Minus Length Divisible by 9
题目
Given 9 integers a_1, ..., a_9, prove that some nonempty consecutive block has sum congruent to its length modulo 9.
解题计时
0:00
提交作答时记录，用于后续平均用时统计。
题目
Given 9 integers a_1, ..., a_9, prove that some nonempty consecutive block has sum congruent to its length modulo 9.
解题计时
0:00
提交作答时记录，用于后续平均用时统计。