// Concatenate pending data with new chunks
// 易错点6：忘记将当前元素入栈，导致前面的元素无法匹配到当前值
，详情可参考搜狗输入法2026
Like this clue numberThe answer is Odd.
That looks something like this for a small grid where our snake is moving down. Notice that we delete and re-print 3 entire lines!