Submission #478917

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
478917	2021-10-09T06:19:24 Z	IvnF	Bitaro the Brave (JOI19_ho_t1)	C++14	100 / 100	450 ms	153880 KB

joi2019_ho_t1

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
#define ull unsigned long long
#define fi first
#define se second
#define ld long double
ll n, m;
char arr[3005][3005];
ll pi[3005][3005], po[3005][3005];

int main(){
	ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	cin >> n >> m;
	for(int i=1;i<=n;++i){
		for(int j=1;j<=m;++j){
			cin >> arr[i][j];
		}
	}
	for(int j=1;j<=m;++j){
		for(int i=n;i>=1;--i){
			pi[i][j]=pi[i+1][j];
			pi[i][j]+=(arr[i][j]=='I');
		}
	}
	for(int i=1;i<=n;++i){
		for(int j=m;j>=1;--j){
			po[i][j]=po[i][j+1];
			po[i][j]+=(arr[i][j]=='O');
		}	
	}
	ll ans=0;
	for(int i=1;i<=n;++i){
		for(int j=1;j<=m;++j){
			if(arr[i][j]=='J'){
				ans+=pi[i+1][j]*po[i][j+1];
			}
		}
	}
	cout << ans << '\n';
}

Subtask #1

20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	332 KB	Output is correct
2	Correct	0 ms	332 KB	Output is correct
3	Correct	1 ms	332 KB	Output is correct
4	Correct	0 ms	332 KB	Output is correct
5	Correct	1 ms	1484 KB	Output is correct
6	Correct	1 ms	1484 KB	Output is correct
7	Correct	1 ms	1356 KB	Output is correct
8	Correct	1 ms	1484 KB	Output is correct
9	Correct	1 ms	1484 KB	Output is correct
10	Correct	1 ms	1356 KB	Output is correct
11	Correct	1 ms	1484 KB	Output is correct
12	Correct	1 ms	1484 KB	Output is correct
13	Correct	2 ms	1356 KB	Output is correct

Subtask #2

30.0 / 30.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	332 KB	Output is correct
2	Correct	0 ms	332 KB	Output is correct
3	Correct	1 ms	332 KB	Output is correct
4	Correct	0 ms	332 KB	Output is correct
5	Correct	1 ms	1484 KB	Output is correct
6	Correct	1 ms	1484 KB	Output is correct
7	Correct	1 ms	1356 KB	Output is correct
8	Correct	1 ms	1484 KB	Output is correct
9	Correct	1 ms	1484 KB	Output is correct
10	Correct	1 ms	1356 KB	Output is correct
11	Correct	1 ms	1484 KB	Output is correct
12	Correct	1 ms	1484 KB	Output is correct
13	Correct	2 ms	1356 KB	Output is correct
14	Correct	12 ms	8832 KB	Output is correct
15	Correct	3 ms	4940 KB	Output is correct
16	Correct	6 ms	5324 KB	Output is correct
17	Correct	1 ms	460 KB	Output is correct
18	Correct	11 ms	9908 KB	Output is correct
19	Correct	11 ms	9804 KB	Output is correct
20	Correct	10 ms	9676 KB	Output is correct
21	Correct	10 ms	9932 KB	Output is correct
22	Correct	11 ms	9804 KB	Output is correct
23	Correct	11 ms	9700 KB	Output is correct
24	Correct	11 ms	9920 KB	Output is correct
25	Correct	10 ms	9756 KB	Output is correct
26	Correct	13 ms	9744 KB	Output is correct

Subtask #3

50.0 / 50.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	332 KB	Output is correct
2	Correct	0 ms	332 KB	Output is correct
3	Correct	1 ms	332 KB	Output is correct
4	Correct	0 ms	332 KB	Output is correct
5	Correct	1 ms	1484 KB	Output is correct
6	Correct	1 ms	1484 KB	Output is correct
7	Correct	1 ms	1356 KB	Output is correct
8	Correct	1 ms	1484 KB	Output is correct
9	Correct	1 ms	1484 KB	Output is correct
10	Correct	1 ms	1356 KB	Output is correct
11	Correct	1 ms	1484 KB	Output is correct
12	Correct	1 ms	1484 KB	Output is correct
13	Correct	2 ms	1356 KB	Output is correct
14	Correct	12 ms	8832 KB	Output is correct
15	Correct	3 ms	4940 KB	Output is correct
16	Correct	6 ms	5324 KB	Output is correct
17	Correct	1 ms	460 KB	Output is correct
18	Correct	11 ms	9908 KB	Output is correct
19	Correct	11 ms	9804 KB	Output is correct
20	Correct	10 ms	9676 KB	Output is correct
21	Correct	10 ms	9932 KB	Output is correct
22	Correct	11 ms	9804 KB	Output is correct
23	Correct	11 ms	9700 KB	Output is correct
24	Correct	11 ms	9920 KB	Output is correct
25	Correct	10 ms	9756 KB	Output is correct
26	Correct	13 ms	9744 KB	Output is correct
27	Correct	434 ms	153728 KB	Output is correct
28	Correct	15 ms	26316 KB	Output is correct
29	Correct	21 ms	13880 KB	Output is correct
30	Correct	1 ms	716 KB	Output is correct
31	Correct	320 ms	128736 KB	Output is correct
32	Correct	417 ms	153740 KB	Output is correct
33	Correct	413 ms	153228 KB	Output is correct
34	Correct	364 ms	148820 KB	Output is correct
35	Correct	419 ms	153752 KB	Output is correct
36	Correct	399 ms	153228 KB	Output is correct
37	Correct	450 ms	153880 KB	Output is correct
38	Correct	319 ms	128196 KB	Output is correct
39	Correct	286 ms	128316 KB	Output is correct