i want find specific vector in vector group. help me

hi,im working on my Q learning in matlab. i setup grid world and there is wall. and i want find the state that crushing wall.

whole state is 10x10 grid world current states is S=[x y] and state of wall is [2 4].[2 7],[3 5],[3 7]

i want know that how can i find this S=[x y] is in state of wall or not.

for example, '' if S is in state of wall, output is 1 or someting''and after knowing this, i can set up my reward value.

please help me.