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1388.py
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1388.py
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import sys
input = sys.stdin.readline
sys.setrecursionlimit(10000)
N, M = map(int, input().split())
wood_list = []
stack = [[0, _] for _ in range(M-1, -1, -1)]
queue = [[0, _] for _ in range(M)]
result = 0
for _ in range(N):
wood_list.append(input())
def wood_dfs(wood):
global M, N
global stack
global wood_list
global result
if len(stack) == 0:
return 0
i, j = stack.pop()
tempwood = wood_list[i][j]
if i < N-1:
stack.append([i+1, j])
if wood != '|' and tempwood == '|':
result += 1
wood_dfs(tempwood)
else:
wood_dfs(tempwood)
else:
if wood != '|' and tempwood == '|':
result += 1
wood_dfs(None)
else:
wood_dfs(None)
def wood_bfs(wood):
global M, N
global queue
global wood_list
global result
if len(queue) == 0:
return 0
i, j = queue.pop(0)
tempwood = wood_list[i][j]
if j < M-1:
if i < N-1:
queue.append([i+1, j])
if wood != '-' and tempwood == '-':
result += 1
wood_bfs(tempwood)
else:
wood_bfs(tempwood)
else:
if i < N-1:
queue.append([i+1, j])
if wood != '-' and tempwood == '-':
result += 1
wood_bfs(None)
else:
wood_bfs(None)
wood_dfs(None)
wood_bfs(None)
print(result)