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A - You should output ARC, though this is ABC.

Score : $100$ points

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.

1 2
1 0
0 1

0

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

2 2
1 2
3 4

4

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

2 1
90 80
70 60

70

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