class Solution:

def calculateMinimumHP(self, dungeon: List[List[int]]) -> int:
def oneIfNotPos(a):
return a if a > 0 else 1

def f(i: int, j: int) -> int:
cached = self.cache.get((i, j))
if cached:
return cached

answer = min(oneIfNotPos(f(i, j + 1) - dungeon[i][j]), \
oneIfNotPos(f(i + 1, j) - dungeon[i][j]))

self.cache[(i, j)] = answer
return answer

m = len(dungeon)
n = len(dungeon[0])

# init cache to remove ifs from f
self.cache = {(m - 1, n - 1): oneIfNotPos(1 - dungeon[m - 1][n - 1])}
for i in range(0, m):
self.cache[(i, n)] = 1000 000000 # inf
for j in range(0, n):
self.cache[(m, j)] = 10000 00000 # inf

return f(0, 0)

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n = int(input())
a = list(map(int,input().split()))
c = 0
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s1 = sum(list(map(int,bin(i)[2:].split())))
s2 = sum(list(map(int,bin(j)[2:].split())))
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