Score : $100$ points

问题描述

给定整数 $R$、$C$ 以及一个 $2 \times 2$ 矩阵 $A$，输出矩阵 $A$ 中的元素 $A_{R,C}$。

以上为通义千问 qwen-max 翻译，仅供参考。

Problem Statement

Given integers $R$, $C$, and a $2 \times 2$ matrix $A$, print $A_{R,C}$.

Constraints

• All values in input are integers.
• $1 \le R,C \le 2$
• $0 \le A_{i,j} \le 100$

Input

Input is given from Standard Input in the following format:

$R$ $C$

$A_{1,1}$ $A_{1,2}$

$A_{2,1}$ $A_{2,2}$

Output

Print the answer as an integer.

Sample Input 1

1 2
1 0
0 1

Sample Output 1

0

We have $A_{1,2}=0$.

Sample Input 2

2 2
1 2
3 4

Sample Output 2

4

We have $A_{2,2}=4$.

Sample Input 3

2 1
90 80
70 60

Sample Output 3

70

We have $A_{2,1}=70$.

update @ 2024/3/10 10:50:58