3 人解决，6 人已尝试。
5 份提交通过，共有 11 份提交。
8.3 EMB 奖励。
单点时限: 2.0 sec
内存限制: 256 MB
The cows have taken up alphabetical jigsaw puzzles. In these puzzles with $R$ ($1 \le R \le 10$) rows and $C$ ($1 \le C \le 10$) columns, the edges are not funny-shaped cardboard shapes but rather are letters.
Each piece has a serial number and $4$ letters (or borders) that must be aligned as in a regular jigsaw puzzle. The pseudo-letter ‘0’ (the digit 0) will represent a border (and a piece can have several borders if it is a corner piece or even the top of column in a, e.g., 4x1 puzzle). Below is a set of six pieces (the borders are marked with lines instead of ‘0’s) assembled in one way (of many) that completes the puzzle:
of column in a, e.g., 4x1 puzzle). Below is a set of six pieces (the borders are marked with lines instead of ‘0’s) assembled in one way (of many) that completes the puzzle:
+---+ +---+ +---+ | 1 c c 3 d d 5 | +-d-+ + a + +-e-+ +-d-+ +-a-+ +-e-+ | 2 b b 4 b b 6 | +---+ +---+ +---+
Note that each edge letter of each piece matches the border letter of the piece adjacent to it; the borders appear properly on the top, bottom, and sides. Pieces are represented by a serial number and a clockwise list of their four edges (where edges are the letters a..z and 0). Pieces might require rotation when placed in the puzzle. Given a set of pieces, find at least one way to assemble them into a puzzle. Test data for puzzles with larger $R$ and $C$ are easier to solve because they have a more varied set of edge letters.
Line 1: Two space-separated integers: $R$ and $C$
Lines 2..$RC+1$: Each line contains five space-separated entities: an integer serial number and four edge identifiers
2 3 1 c d 0 0 2 0 d b 0 3 c 0 d a 4 b a b 0 5 d 0 0 e 6 0 0 b e
1 0 c d 0 3 0 d a c 5 0 0 e d 2 d b 0 0 4 a b 0 b 6 e 0 0 b
INPUT DETAILS:
Describes the input puzzle although with some of the pieces rotated compared to the sample solution.
OUTPUT DETAILS:
As shown in the diagram in the task text. Other solutions (like reflections) are possible; a grading program will check your answer.
3 人解决，6 人已尝试。
5 份提交通过，共有 11 份提交。
8.3 EMB 奖励。