The recursion is obvious ... But if you want to do matrix multiplication, you have to split the points .. At first, I was very confused about every weight v>1 All sides are new v-1 There are two nodes to transfer ... And then TLE 了 ... Break each point into 9 Just one ... Time complexity O((9N)^3*logT)

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## 1297: [SCOI2009] Get lost

Time Limit: 10 Sec Memory Limit: 162 MB

Submit: 857 Solved: 602

[Submit][Status][Discuss]

## Description

## Input

## Output

## Sample Input

2 2

11

00

【 Enter example 2 】

5 30

12045

07105

47805

12024

12345

## Sample Output

1

【 Examples explain one 】

0->0->1

【 Output sample 2 】

852

## HINT

30% The data of , Satisfy 2 <= N <= 5 ; 1 <= T <= 30 .

100% The data of , Satisfy 2 <= N <= 10 ; 1 <= T <= 1000000000 .

## Source

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