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Check if any valid sequence is divisible by M | Python3 program to check if any valid sequence is divisible by M.
Base case.
check if sum is divisible by M.
check if the current state is already computed.
1. Try placing '+.
2. Try placing '-.
calculate value of res for recursive case.
store the value for res for current states and return for parent call.
Driver code"
Solution in Python:

Can you provide a code to check if any valid sequence is divisible by M and the other steps required?
assistant
#Here is code to check if any valid sequence is divisible by M and the other steps required.
 def isPossible ( n , index , Sum , M , arr , dp ) :
	global MAX
	if index == n :
		if ( Sum % M ) == 0 :
			return True
		return False
	if dp [ index ] [ Sum ] != - 1 :
		return dp [ index ] [ Sum ]
'
	placeAdd = isPossible ( n , index + 1 , Sum + arr [ index ] , M , arr , dp )
'
	placeMinus = isPossible ( n , index + 1 , Sum - arr [ index ] , M , arr , dp )
	res = placeAdd or placeMinus
	dp [ index ] [ Sum ] = res
	return res
MAX = 1000
arr = [ 1 , 2 , 3 , 4 , 6 ]
n = len ( arr )
M = 4
dp = [ [ - 1 ] * MAX for i in range ( n + 1 ) ]
res = isPossible ( n , 0 , 0 , M , arr , dp )
if res :
	print ( True )
else :
	print ( False )