Submission #1027176

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
1027176	2024-07-19T01:39:16 Z	vjudge1	Bitaro the Brave (JOI19_ho_t1)	C++17	100 / 100	254 ms	150624 KB

joi2019_ho_t1

#include <bits/stdc++.h>
#define ll long long
#define nikah ios_base::sync_with_stdio(0); cin.tie(0);
const ll maxn = 3e3+7;
using namespace std;

ll t,n,m;
char a[maxn][maxn];
ll pref1[maxn][maxn], pref2[maxn][maxn];

int main () {
	nikah
	cin>>n>>m;
	for (ll i=1; i<=n; i++) {
		for (ll j=1; j<=m; j++) {
			cin>>a[i][j];
		}
	}
	ll ans = 0;
	for (ll i=1; i<=n; i++) {
		for (ll j=m; j>=1; j--) {
			if (a[i][j] == 'O') pref1[i][j]++;
			pref1[i][j] += pref1[i][j+1];
		}
	}
	for (ll j=1; j<=m; j++) {
		for (ll i=n; i>=1; i--) {
			if (a[i][j] == 'I') pref2[i][j]++;
			pref2[i][j] += pref2[i+1][j];
		}
	}
	for (ll i=1; i<=n; i++) {
		for (ll j=1; j<=m; j++) {
			if (a[i][j] == 'J') {
				ans += (pref1[i][j] * pref2[i][j]);
			}
		}
	}
	cout<<ans<<endl;
}

Subtask #1

20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	2392 KB	Output is correct
2	Correct	1 ms	2396 KB	Output is correct
3	Correct	0 ms	2396 KB	Output is correct
4	Correct	1 ms	2396 KB	Output is correct
5	Correct	1 ms	5468 KB	Output is correct
6	Correct	1 ms	5468 KB	Output is correct
7	Correct	1 ms	5212 KB	Output is correct
8	Correct	1 ms	5468 KB	Output is correct
9	Correct	1 ms	5468 KB	Output is correct
10	Correct	2 ms	5212 KB	Output is correct
11	Correct	2 ms	5468 KB	Output is correct
12	Correct	1 ms	5468 KB	Output is correct
13	Correct	1 ms	5212 KB	Output is correct

Subtask #2

30.0 / 30.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	2392 KB	Output is correct
2	Correct	1 ms	2396 KB	Output is correct
3	Correct	0 ms	2396 KB	Output is correct
4	Correct	1 ms	2396 KB	Output is correct
5	Correct	1 ms	5468 KB	Output is correct
6	Correct	1 ms	5468 KB	Output is correct
7	Correct	1 ms	5212 KB	Output is correct
8	Correct	1 ms	5468 KB	Output is correct
9	Correct	1 ms	5468 KB	Output is correct
10	Correct	2 ms	5212 KB	Output is correct
11	Correct	2 ms	5468 KB	Output is correct
12	Correct	1 ms	5468 KB	Output is correct
13	Correct	1 ms	5212 KB	Output is correct
14	Correct	9 ms	11356 KB	Output is correct
15	Correct	2 ms	8028 KB	Output is correct
16	Correct	5 ms	8540 KB	Output is correct
17	Correct	1 ms	2396 KB	Output is correct
18	Correct	8 ms	12468 KB	Output is correct
19	Correct	9 ms	12164 KB	Output is correct
20	Correct	7 ms	12124 KB	Output is correct
21	Correct	7 ms	12380 KB	Output is correct
22	Correct	7 ms	12252 KB	Output is correct
23	Correct	8 ms	12244 KB	Output is correct
24	Correct	9 ms	12380 KB	Output is correct
25	Correct	6 ms	12220 KB	Output is correct
26	Correct	7 ms	12124 KB	Output is correct

Subtask #3

50.0 / 50.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	2392 KB	Output is correct
2	Correct	1 ms	2396 KB	Output is correct
3	Correct	0 ms	2396 KB	Output is correct
4	Correct	1 ms	2396 KB	Output is correct
5	Correct	1 ms	5468 KB	Output is correct
6	Correct	1 ms	5468 KB	Output is correct
7	Correct	1 ms	5212 KB	Output is correct
8	Correct	1 ms	5468 KB	Output is correct
9	Correct	1 ms	5468 KB	Output is correct
10	Correct	2 ms	5212 KB	Output is correct
11	Correct	2 ms	5468 KB	Output is correct
12	Correct	1 ms	5468 KB	Output is correct
13	Correct	1 ms	5212 KB	Output is correct
14	Correct	9 ms	11356 KB	Output is correct
15	Correct	2 ms	8028 KB	Output is correct
16	Correct	5 ms	8540 KB	Output is correct
17	Correct	1 ms	2396 KB	Output is correct
18	Correct	8 ms	12468 KB	Output is correct
19	Correct	9 ms	12164 KB	Output is correct
20	Correct	7 ms	12124 KB	Output is correct
21	Correct	7 ms	12380 KB	Output is correct
22	Correct	7 ms	12252 KB	Output is correct
23	Correct	8 ms	12244 KB	Output is correct
24	Correct	9 ms	12380 KB	Output is correct
25	Correct	6 ms	12220 KB	Output is correct
26	Correct	7 ms	12124 KB	Output is correct
27	Correct	212 ms	150468 KB	Output is correct
28	Correct	9 ms	29788 KB	Output is correct
29	Correct	13 ms	16728 KB	Output is correct
30	Correct	1 ms	2908 KB	Output is correct
31	Correct	153 ms	128200 KB	Output is correct
32	Correct	192 ms	150608 KB	Output is correct
33	Correct	202 ms	150356 KB	Output is correct
34	Correct	190 ms	147296 KB	Output is correct
35	Correct	206 ms	150624 KB	Output is correct
36	Correct	201 ms	150356 KB	Output is correct
37	Correct	254 ms	150608 KB	Output is correct
38	Correct	137 ms	127700 KB	Output is correct
39	Correct	134 ms	127688 KB	Output is correct