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14500.py
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14500.py
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import sys
blocks = [["1111",
"0000",
"0000",
"0000"],
["1000",
"1000",
"1000",
"1000"],
["1100",
"1100",
"0000",
"0000"],
["1000",
"1000",
"1100",
"0000"],
["0100",
"0100",
"1100",
"0000"],
["1110",
"1000",
"0000",
"0000"],
["1000",
"1110",
"0000",
"0000"],
["1100",
"0100",
"0100",
"0000"],
["1100",
"1000",
"1000",
"0000"],
["0010",
"1110",
"0000",
"0000"],
["1110",
"0010",
"0000",
"0000"],
["1000",
"1100",
"0100",
"0000"],
["0100",
"1100",
"1000",
"0000"],
["0110",
"1100",
"0000",
"0000"],
["1100",
"0110",
"0000",
"0000"],
["1110",
"0100",
"0000",
"0000"],
["0100",
"1100",
"0100",
"0000"],
["0100",
"1110",
"0000",
"0000"],
["1000",
"1100",
"1000",
"0000"],
]
def count(y,x,block):
total = 0
for i in range(4):
for j in range(4):
if block[i][j] == '1':
total += board[y+i][x+j]
return total
N, M = map(int,sys.stdin.readline().split())
board = []
for i in range(N):
temp = list(map(int,sys.stdin.readline().split()))
temp += [-10000,-10000,-10000]
board.append(temp)
temp = [-10000] * (M+3)
for i in range(3):
board.append(temp)
answer = 0
for block in blocks:
for i in range(N):
for j in range(M):
total = count(i,j,block)
answer = max(answer,total)
print(answer)