'Confused Robot' problem

#1

I am not able to build a logic for this problem

Link - https://csacademy.com/contest/fii-code-2020-round-3/task/confused-robot/statement/

#2

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at what point are u stuck it is a simple 2D matrix question

u are given the initial positions of the robot and u can only move the robot if it is a valid move else omit that character in the string

please share some approaches that u thought of so that I can help u build on it

and in case u have build some code I`ll help u with that as well

#3

is it clear to you as to how to proceed??

#4

No
I have very little practice of dp so I am not able to proceed

#5

is is not a DP question simple string and 2D matrix
question

#6

constraints are large and editorial says it cannot be solved by implementation and requires dp

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#7

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#8

Please give me a dp solution