h,w = map(int, input().split())
grid = [list(input()) for i in range(h)]
prefx = [[0 for i in range(w)]for i in range(h)]
prefy = [[0 for i in range(w)]for i in range(h)]
for i in range(h):
for j in range(w):
if (j==0 and grid[i][j] == "O"):
prefx[i][j] = 1
else:
prefx[i][j] = prefx[i][j-1] + bool(grid[i][j] == "O")
for i in range(h):
for j in range(w):
if (i==0 and grid[i][j] == "I"):
prefy[i][j] = 1
else:
prefy[i][j] = prefy[i-1][j] + bool(grid[i][j] == "I")
ans = 0
for i in range(h):
for j in range(w):
if grid[i][j] == "J":
ans += (prefx[i][w-1] - prefx[i][j])*(prefy[h-1][j] - prefy[i][j])
print(ans)
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
35 ms |
18156 KB |
Output is correct |
2 |
Correct |
34 ms |
18208 KB |
Output is correct |
3 |
Correct |
36 ms |
18220 KB |
Output is correct |
4 |
Correct |
39 ms |
18220 KB |
Output is correct |
5 |
Correct |
60 ms |
20644 KB |
Output is correct |
6 |
Correct |
62 ms |
21128 KB |
Output is correct |
7 |
Correct |
59 ms |
20696 KB |
Output is correct |
8 |
Correct |
58 ms |
20232 KB |
Output is correct |
9 |
Correct |
58 ms |
20644 KB |
Output is correct |
10 |
Correct |
67 ms |
20684 KB |
Output is correct |
11 |
Correct |
59 ms |
20252 KB |
Output is correct |
12 |
Correct |
58 ms |
21140 KB |
Output is correct |
13 |
Correct |
63 ms |
20704 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
35 ms |
18156 KB |
Output is correct |
2 |
Correct |
34 ms |
18208 KB |
Output is correct |
3 |
Correct |
36 ms |
18220 KB |
Output is correct |
4 |
Correct |
39 ms |
18220 KB |
Output is correct |
5 |
Correct |
60 ms |
20644 KB |
Output is correct |
6 |
Correct |
62 ms |
21128 KB |
Output is correct |
7 |
Correct |
59 ms |
20696 KB |
Output is correct |
8 |
Correct |
58 ms |
20232 KB |
Output is correct |
9 |
Correct |
58 ms |
20644 KB |
Output is correct |
10 |
Correct |
67 ms |
20684 KB |
Output is correct |
11 |
Correct |
59 ms |
20252 KB |
Output is correct |
12 |
Correct |
58 ms |
21140 KB |
Output is correct |
13 |
Correct |
63 ms |
20704 KB |
Output is correct |
14 |
Correct |
114 ms |
31572 KB |
Output is correct |
15 |
Correct |
73 ms |
20856 KB |
Output is correct |
16 |
Correct |
88 ms |
27168 KB |
Output is correct |
17 |
Correct |
58 ms |
19232 KB |
Output is correct |
18 |
Correct |
131 ms |
34852 KB |
Output is correct |
19 |
Correct |
122 ms |
33800 KB |
Output is correct |
20 |
Correct |
130 ms |
34708 KB |
Output is correct |
21 |
Correct |
130 ms |
34416 KB |
Output is correct |
22 |
Correct |
117 ms |
34424 KB |
Output is correct |
23 |
Correct |
120 ms |
34664 KB |
Output is correct |
24 |
Correct |
121 ms |
34500 KB |
Output is correct |
25 |
Correct |
118 ms |
34136 KB |
Output is correct |
26 |
Correct |
123 ms |
34728 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
35 ms |
18156 KB |
Output is correct |
2 |
Correct |
34 ms |
18208 KB |
Output is correct |
3 |
Correct |
36 ms |
18220 KB |
Output is correct |
4 |
Correct |
39 ms |
18220 KB |
Output is correct |
5 |
Correct |
60 ms |
20644 KB |
Output is correct |
6 |
Correct |
62 ms |
21128 KB |
Output is correct |
7 |
Correct |
59 ms |
20696 KB |
Output is correct |
8 |
Correct |
58 ms |
20232 KB |
Output is correct |
9 |
Correct |
58 ms |
20644 KB |
Output is correct |
10 |
Correct |
67 ms |
20684 KB |
Output is correct |
11 |
Correct |
59 ms |
20252 KB |
Output is correct |
12 |
Correct |
58 ms |
21140 KB |
Output is correct |
13 |
Correct |
63 ms |
20704 KB |
Output is correct |
14 |
Correct |
114 ms |
31572 KB |
Output is correct |
15 |
Correct |
73 ms |
20856 KB |
Output is correct |
16 |
Correct |
88 ms |
27168 KB |
Output is correct |
17 |
Correct |
58 ms |
19232 KB |
Output is correct |
18 |
Correct |
131 ms |
34852 KB |
Output is correct |
19 |
Correct |
122 ms |
33800 KB |
Output is correct |
20 |
Correct |
130 ms |
34708 KB |
Output is correct |
21 |
Correct |
130 ms |
34416 KB |
Output is correct |
22 |
Correct |
117 ms |
34424 KB |
Output is correct |
23 |
Correct |
120 ms |
34664 KB |
Output is correct |
24 |
Correct |
121 ms |
34500 KB |
Output is correct |
25 |
Correct |
118 ms |
34136 KB |
Output is correct |
26 |
Correct |
123 ms |
34728 KB |
Output is correct |
27 |
Runtime error |
661 ms |
274432 KB |
Execution killed with signal 9 |
28 |
Halted |
0 ms |
0 KB |
- |