-
Notifications
You must be signed in to change notification settings - Fork 0
/
a.py
86 lines (65 loc) · 1.92 KB
/
a.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
import sys
DEBUGGING = False
def printfield(f):
print("Минное поле:")
for r in f:
print(r)
def check(f, r, c):
if f[r][c] != 1:
f[r][c] = 1
if r - 1 >= 0:
check(f, r - 1, c) # сверху
if r + 1 < len(f):
check(f, r + 1, c) # снизу
if c - 1 >= 0:
check(f, r, c - 1) # слева
if c + 1 < len(f[r]):
check(f, r, c + 1) # справа
def check2(f, r, c):
if (r < 0) or (r >= len(f)) or (c < 0) or (c >= len(f[r])):
return
elif f[r][c] == 0:
f[r][c] = 1
return check2(f, r - 1, c), check2(f, r + 1, c), check2(f, r, c - 1), check2(f, r, c + 1)
def check3(f, r, c):
cells = [(r, c)]
while len(cells) > 0:
r, c = cells.pop()
if (r >= 0) and (r < len(f)) and (c >= 0) and (c < len(f[r])):
if f[r][c] == 0:
f[r][c] = 1
cells.append((r - 1, c))
cells.append((r + 1, c))
cells.append((r, c - 1))
cells.append((r, c + 1))
def main():
if DEBUGGING:
# inf = open("a-example-1.txt") # 2
# inf = open("a-example-2.txt") # 1
inf = open("a-my-example-3.txt")
else:
inf = sys.stdin
n, m = map(int, inf.readline().split(" "))
rowscnt, colscnt = n, m
f = [[0 for x in range(colscnt)] for y in range(rowscnt)]
if DEBUGGING:
printfield(f)
k = int(inf.readline())
for i in range(0, k):
r, c = map(int, inf.readline().split(" "))
f[r - 1][c - 1] = 1
if DEBUGGING:
print(r, c)
if DEBUGGING:
printfield(f)
answer = 0
for r in range(0, rowscnt):
for c in range(0, colscnt):
if f[r][c] == 0:
answer += 1
check3(f, r, c)
if DEBUGGING:
printfield(f)
print(answer)
# if __name__ == "__main__":
main()