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给出一个 $n\times n$ 的$01$矩阵$c$，求有多少长度为 $n$ 的 $01$ 序列 $a,b$，满足 $c_{i,j}=a_i$ 或 $c_{i,j}=b_j$，答案对 $998\,244\,353$ 取模。
第一行一个整数 $n$ 表示矩阵大小。
接下来 $n$ 行，每行一个长度为 $n$ 的 $01$ 字符串 $c_i$，其中第 $j$ 个字符表示 $c_{i,j}$。
一行一个整数表示答案对 $998\,244\,353$ 取模后的结果。
3 010 101 010
2
Subtask 1（5 分）：$n \le 10$
Subtask 2（15 分）：$n \le 20$
Subtask 3（40 分）：$n \le 300$
Subtask 4（5 分）：$c$ 矩阵随机
Subtask 5（35 分）：没有特殊限制。
$1\leq n \leq 5000,0\leq c_{i,j}\leq 1$
| ID | Type | Status | Title | Posted By | Last Updated | Actions |
|---|---|---|---|---|---|---|
| Editorial | Open | Official Editorial | Qingyu | - | Download |
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