maxProfit.py

 def maxProfit ( self, prices ):
		
		previous_delta = 0
		delta = 0
		max_profit = 0
		
		for i in range( 1 , len ( prices ) ) :
			
			previous_delta = delta
			delta = prices[ i ] - prices [ i - 1 ] 
			
			if  previous_delta > 0 : 
				delta += previous_delta

			if  max_profit < delta :
				max_profit = delta

		return max_profit
		
n = int( input() )
for i in range ( n ):
	print ( maxProfit ( None, [ int(x) for x in input().split(' ') ] ) )