estie プログラミングコンテスト2023 (AtCoder Regular Contest 169)
F
Large DP Table
AtCoder
⌀ 3434
原题
← E→
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Problem Statement

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You are given integer sequences of length $N$: $A=(A_1,A_2,\cdots,A_N)$, $B=(B_1,B_2,\cdots,B_N)$, $X=(X_1,X_2,\cdots,X_N)$, and $Y=(Y_1,Y_2,\cdots,Y_N)$. Here, $A$ and $B$ satisfy the following properties:

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  • $A_1=1$.
  • $B_1=2$.
  • $(A_1,A_2,\cdots,A_N,B_1,B_2,\cdots,B_N)$ is a permutation of $(1,2,\cdots,2N)$.
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Define the integers $d_{i,j}$ ($1 \leq i,j \leq N$) as follows:

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  • $d_{1,1}=0$.
  • If $(i,j) \neq (1,1)$ and $A_i<B_j$, then $d_{i,j}=d_{i,j-1}+X_i$.
  • If $(i,j) \neq (1,1)$ and $A_i>B_j$, then $d_{i,j}=d_{i-1,j}+Y_j$.
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Find $\sum_{1 \leq i \leq N}\sum_{1 \leq j \leq N}d_{i,j}$, modulo $998244353$.

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Constraints

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  • $2 \leq N \leq 250000$
  • $A_1=1$
  • $B_1=2$
  • $(A_1,A_2,\cdots,A_N,B_1,B_2,\cdots,B_N)$ is a permutation of $(1,2,\cdots,2N)$.
  • $1 \leq X_i \leq 10^9$
  • $1 \leq Y_i \leq 10^9$
  • All input values are integers.
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Input

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The input is given from Standard Input in the following format:

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N
A_1 A_2 \cdots A_N
B_1 B_2 \cdots B_N
X_1 X_2 \cdots X_N
Y_1 Y_2 \cdots Y_N

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Output

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Print the answer.

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样例

Input #1
2
1 4
2 3
2 2
1 3
Output #1
8
The values of $d_{i,j}$ are as follows: - $d_{1,1}=0$ - $d_{1,2}=d_{1,1}+X_1=0+2=2$ - $d_{2,1}=d_{1,1}+Y_1=0+1=1$ - $d_{2,2}=d_{1,2}+Y_2=2+3=5$ Thus, the answer is $0+2+1+5=8$.
Input #2
3
1 3 5
2 6 4
1 10 100
1000 10000 100000
Output #2
108153
Input #3
3
1 6 5
2 4 3
1 10 100
1000 10000 100000
Output #3
333009
Input #4
10
1 17 4 7 16 18 9 3 12 6
2 19 20 14 5 11 13 8 15 10
744280520 249168130 239276621 320064892 910500852 164832983 245532751 198319687 715892722 967824729
769431650 80707350 459924868 257261830 777045524 583882654 950300099 438099970 322288793 532405020
Output #4
746075419
题目信息
题号
arc169_f
时间限制
2 s
内存限制
1024 MB

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