Contest 2050 and Codeforces Round 718 (Div. 1 + Div. 2)
D
Explorer Space
Codeforces
1800
原题
← CE →
翻译中…

You are wandering in the explorer space of the 2050 Conference.

翻译中…

The explorer space can be viewed as an undirected weighted grid graph with size $n\times m$. The set of vertices is $\{(i, j)|1\le i\le n, 1\le j\le m\}$. Two vertices $(i_1,j_1)$ and $(i_2, j_2)$ are connected by an edge if and only if $|i_1-i_2|+|j_1-j_2|=1$.

翻译中…

At each step, you can walk to any vertex connected by an edge with your current vertex. On each edge, there are some number of exhibits. Since you already know all the exhibits, whenever you go through an edge containing $x$ exhibits, your boredness increases by $x$.

翻译中…

For each starting vertex $(i, j)$, please answer the following question: What is the minimum possible boredness if you walk from $(i, j)$ and go back to it after exactly $k$ steps?

翻译中…

You can use any edge for multiple times but the boredness on those edges are also counted for multiple times. At each step, you cannot stay on your current vertex. You also cannot change direction while going through an edge. Before going back to your starting vertex $(i, j)$ after $k$ steps, you can visit $(i, j)$ (or not) freely.

翻译中…

Input

翻译中…

The first line contains three integers $n$, $m$ and $k$ ($2\leq n, m\leq 500, 1\leq k\leq 20$).

翻译中…

The $j$-th number ($1\le j \le m - 1$) in the $i$-th line of the following $n$ lines is the number of exibits on the edge between vertex $(i, j)$ and vertex $(i, j+1)$.

翻译中…

The $j$-th number ($1\le j\le m$) in the $i$-th line of the following $n-1$ lines is the number of exibits on the edge between vertex $(i, j)$ and vertex $(i+1, j)$.

翻译中…

The number of exhibits on each edge is an integer between $1$ and $10^6$.

翻译中…

Output

翻译中…

Output $n$ lines with $m$ numbers each. The $j$-th number in the $i$-th line, $answer_{ij}$, should be the minimum possible boredness if you walk from $(i, j)$ and go back to it after exactly $k$ steps.

翻译中…

If you cannot go back to vertex $(i, j)$ after exactly $k$ steps, $answer_{ij}$ should be $-1$.

翻译中…

Note

翻译中…

In the first example, the answer is always $10$ no matter how you walk.

翻译中…

In the second example, $answer_{21} = 10$, the path is $(2,1) \to (1,1) \to (1,2) \to (2,2) \to (2,1)$, the boredness is $4 + 1 + 2 + 3 = 10$.

翻译中…

样例

Input #1
3 3 10
1 1
1 1
1 1
1 1 1
1 1 1
Output #1
10 10 10
10 10 10
10 10 10
InputCopy OutputCopy
Input #2
2 2 4
1
3
4 2
Output #2
4 4
10 6
InputCopy OutputCopy
Input #3
2 2 3
1
2
3 4
Output #3
-1 -1
-1 -1
InputCopy OutputCopy
题目信息
题号
1517D
时间限制
2 s
内存限制
256 MB
标签
动态规划
图论
最短路

题面与样例版权归 Codeforces 及出题人所有;中文翻译由 AI 生成(CI 管线),如有出入请以原文为准。