Submission #818771

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
818771	2023-08-10T06:42:01 Z	Zanite	Bitaro the Brave (JOI19_ho_t1)	C++17	100 / 100	299 ms	80236 KB

joi2019_ho_t1

#include <bits/stdc++.h>
using namespace std;

const int maxN	= 3023;

int H, W;
char grid[maxN][maxN];
int O[maxN][maxN], I[maxN][maxN];

int main() {
	ios_base::sync_with_stdio(false); cin.tie(NULL);

	cin >> H >> W;
	for (int i = 1; i <= H; i++) {
		for (int j = 1; j <= W; j++) {
			cin >> grid[i][j];
		}
	}

	for (int i = 1; i <= H; i++) {
		for (int j = W; j >= 1; j--) {
			O[i][j] = O[i][j+1] + (grid[i][j] == 'O');
		}
	}

	for (int j = 1; j <= W; j++) {
		for (int i = H; i >= 1; i--) {
			I[i][j] = I[i+1][j] + (grid[i][j] == 'I');
		}
	}

	long long ans = 0;
	for (int i = 1; i <= H; i++) {
		for (int j = 1; j <= W; j++) {
			if (grid[i][j] == 'J') {
				ans += 1ll * O[i][j] * I[i][j];
			}
		}
	}
	cout << ans << '\n';
}

Subtask #1

20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	340 KB	Output is correct
2	Correct	0 ms	340 KB	Output is correct
3	Correct	0 ms	340 KB	Output is correct
4	Correct	0 ms	340 KB	Output is correct
5	Correct	1 ms	1492 KB	Output is correct
6	Correct	1 ms	1492 KB	Output is correct
7	Correct	1 ms	1312 KB	Output is correct
8	Correct	1 ms	1492 KB	Output is correct
9	Correct	1 ms	1492 KB	Output is correct
10	Correct	1 ms	1364 KB	Output is correct
11	Correct	1 ms	1492 KB	Output is correct
12	Correct	1 ms	1492 KB	Output is correct
13	Correct	1 ms	1364 KB	Output is correct

Subtask #2

30.0 / 30.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	340 KB	Output is correct
2	Correct	0 ms	340 KB	Output is correct
3	Correct	0 ms	340 KB	Output is correct
4	Correct	0 ms	340 KB	Output is correct
5	Correct	1 ms	1492 KB	Output is correct
6	Correct	1 ms	1492 KB	Output is correct
7	Correct	1 ms	1312 KB	Output is correct
8	Correct	1 ms	1492 KB	Output is correct
9	Correct	1 ms	1492 KB	Output is correct
10	Correct	1 ms	1364 KB	Output is correct
11	Correct	1 ms	1492 KB	Output is correct
12	Correct	1 ms	1492 KB	Output is correct
13	Correct	1 ms	1364 KB	Output is correct
14	Correct	6 ms	7252 KB	Output is correct
15	Correct	2 ms	4948 KB	Output is correct
16	Correct	3 ms	4180 KB	Output is correct
17	Correct	0 ms	340 KB	Output is correct
18	Correct	7 ms	7764 KB	Output is correct
19	Correct	7 ms	7636 KB	Output is correct
20	Correct	6 ms	7508 KB	Output is correct
21	Correct	7 ms	7684 KB	Output is correct
22	Correct	7 ms	7600 KB	Output is correct
23	Correct	6 ms	7508 KB	Output is correct
24	Correct	8 ms	7764 KB	Output is correct
25	Correct	7 ms	7700 KB	Output is correct
26	Correct	7 ms	7508 KB	Output is correct

Subtask #3

50.0 / 50.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	340 KB	Output is correct
2	Correct	0 ms	340 KB	Output is correct
3	Correct	0 ms	340 KB	Output is correct
4	Correct	0 ms	340 KB	Output is correct
5	Correct	1 ms	1492 KB	Output is correct
6	Correct	1 ms	1492 KB	Output is correct
7	Correct	1 ms	1312 KB	Output is correct
8	Correct	1 ms	1492 KB	Output is correct
9	Correct	1 ms	1492 KB	Output is correct
10	Correct	1 ms	1364 KB	Output is correct
11	Correct	1 ms	1492 KB	Output is correct
12	Correct	1 ms	1492 KB	Output is correct
13	Correct	1 ms	1364 KB	Output is correct
14	Correct	6 ms	7252 KB	Output is correct
15	Correct	2 ms	4948 KB	Output is correct
16	Correct	3 ms	4180 KB	Output is correct
17	Correct	0 ms	340 KB	Output is correct
18	Correct	7 ms	7764 KB	Output is correct
19	Correct	7 ms	7636 KB	Output is correct
20	Correct	6 ms	7508 KB	Output is correct
21	Correct	7 ms	7684 KB	Output is correct
22	Correct	7 ms	7600 KB	Output is correct
23	Correct	6 ms	7508 KB	Output is correct
24	Correct	8 ms	7764 KB	Output is correct
25	Correct	7 ms	7700 KB	Output is correct
26	Correct	7 ms	7508 KB	Output is correct
27	Correct	289 ms	80112 KB	Output is correct
28	Correct	15 ms	26068 KB	Output is correct
29	Correct	12 ms	7168 KB	Output is correct
30	Correct	1 ms	596 KB	Output is correct
31	Correct	207 ms	66784 KB	Output is correct
32	Correct	265 ms	80236 KB	Output is correct
33	Correct	271 ms	79820 KB	Output is correct
34	Correct	245 ms	77452 KB	Output is correct
35	Correct	269 ms	80100 KB	Output is correct
36	Correct	267 ms	79896 KB	Output is correct
37	Correct	299 ms	80204 KB	Output is correct
38	Correct	190 ms	66816 KB	Output is correct
39	Correct	188 ms	66552 KB	Output is correct