2026牛客寒假营第三场题解 A. 宙天 题目链接：https://ac.nowcoder.com/acm/contest/120563/A 代码链接：https://ac.nowcoder.com/acm/contest/view-submission?submissionId=82110201 注意到x的范围很小，只有100，直接枚举k就行 B. Random 题目链接：https://ac.nowcoder.com/acm/contest/120563/B 代码链接：https://ac.nowcoder.com/acm/contest/view-submission?submissio...