# In a game, you are given a sequence of integers, +ve signifying powerup and -ve specifying power spent in defeating a monster.
# At no stage in the game should the power of the wizard go below 1. 
#
# Find the minimum start value of the power that the wizard should have, to successfully complete the game 
#
# Example 1
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#
# Input : [ -2, 3, 1, -5 ]
# Output : 4
#

