Submission #317287

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
317287	2020-10-29T09:52:39 Z	nandonathaniel	Bitaro the Brave (JOI19_ho_t1)	C++14	100 / 100	371 ms	88716 KB

joi2019_ho_t1

#include<bits/stdc++.h>
using namespace std;
const int MAXN=3005;

char a[MAXN][MAXN];
int sufO[MAXN][MAXN],sufI[MAXN][MAXN];

int main(){
	ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	int n,m;
	cin >> n >> m;
	for(int i=1;i<=n;i++){
		for(int j=1;j<=m;j++)cin >> a[i][j];
	}
	for(int i=1;i<=n;i++){
		for(int j=m;j>=1;j--){
			sufO[i][j]=sufO[i][j+1];
			if(a[i][j]=='O')sufO[i][j]++;
		}
	}
	for(int i=1;i<=m;i++){
		for(int j=n;j>=1;j--){
			sufI[i][j]=sufI[i][j+1];
			if(a[j][i]=='I')sufI[i][j]++;
		}
	}
	long long ans=0;
	for(int i=1;i<=n;i++){
		for(int j=1;j<=m;j++){
			if(a[i][j]=='J'){
				ans+=(sufO[i][j+1]*sufI[j][i+1]);
			}
		}
	}
	cout << ans << '\n';
	return 0;
}

Subtask #1

20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	384 KB	Output is correct
2	Correct	0 ms	384 KB	Output is correct
3	Correct	1 ms	384 KB	Output is correct
4	Correct	1 ms	384 KB	Output is correct
5	Correct	2 ms	1536 KB	Output is correct
6	Correct	1 ms	1408 KB	Output is correct
7	Correct	2 ms	1408 KB	Output is correct
8	Correct	1 ms	1536 KB	Output is correct
9	Correct	1 ms	1408 KB	Output is correct
10	Correct	1 ms	1408 KB	Output is correct
11	Correct	2 ms	1536 KB	Output is correct
12	Correct	1 ms	1408 KB	Output is correct
13	Correct	1 ms	1408 KB	Output is correct

Subtask #2

30.0 / 30.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	384 KB	Output is correct
2	Correct	0 ms	384 KB	Output is correct
3	Correct	1 ms	384 KB	Output is correct
4	Correct	1 ms	384 KB	Output is correct
5	Correct	2 ms	1536 KB	Output is correct
6	Correct	1 ms	1408 KB	Output is correct
7	Correct	2 ms	1408 KB	Output is correct
8	Correct	1 ms	1536 KB	Output is correct
9	Correct	1 ms	1408 KB	Output is correct
10	Correct	1 ms	1408 KB	Output is correct
11	Correct	2 ms	1536 KB	Output is correct
12	Correct	1 ms	1408 KB	Output is correct
13	Correct	1 ms	1408 KB	Output is correct
14	Correct	11 ms	7040 KB	Output is correct
15	Correct	2 ms	3328 KB	Output is correct
16	Correct	7 ms	5248 KB	Output is correct
17	Correct	1 ms	1664 KB	Output is correct
18	Correct	12 ms	8064 KB	Output is correct
19	Correct	10 ms	7808 KB	Output is correct
20	Correct	10 ms	7840 KB	Output is correct
21	Correct	13 ms	8064 KB	Output is correct
22	Correct	12 ms	7808 KB	Output is correct
23	Correct	10 ms	7936 KB	Output is correct
24	Correct	13 ms	8064 KB	Output is correct
25	Correct	11 ms	7936 KB	Output is correct
26	Correct	10 ms	7936 KB	Output is correct

Subtask #3

50.0 / 50.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	384 KB	Output is correct
2	Correct	0 ms	384 KB	Output is correct
3	Correct	1 ms	384 KB	Output is correct
4	Correct	1 ms	384 KB	Output is correct
5	Correct	2 ms	1536 KB	Output is correct
6	Correct	1 ms	1408 KB	Output is correct
7	Correct	2 ms	1408 KB	Output is correct
8	Correct	1 ms	1536 KB	Output is correct
9	Correct	1 ms	1408 KB	Output is correct
10	Correct	1 ms	1408 KB	Output is correct
11	Correct	2 ms	1536 KB	Output is correct
12	Correct	1 ms	1408 KB	Output is correct
13	Correct	1 ms	1408 KB	Output is correct
14	Correct	11 ms	7040 KB	Output is correct
15	Correct	2 ms	3328 KB	Output is correct
16	Correct	7 ms	5248 KB	Output is correct
17	Correct	1 ms	1664 KB	Output is correct
18	Correct	12 ms	8064 KB	Output is correct
19	Correct	10 ms	7808 KB	Output is correct
20	Correct	10 ms	7840 KB	Output is correct
21	Correct	13 ms	8064 KB	Output is correct
22	Correct	12 ms	7808 KB	Output is correct
23	Correct	10 ms	7936 KB	Output is correct
24	Correct	13 ms	8064 KB	Output is correct
25	Correct	11 ms	7936 KB	Output is correct
26	Correct	10 ms	7936 KB	Output is correct
27	Correct	340 ms	86008 KB	Output is correct
28	Correct	11 ms	16768 KB	Output is correct
29	Correct	27 ms	17408 KB	Output is correct
30	Correct	8 ms	9856 KB	Output is correct
31	Correct	255 ms	72664 KB	Output is correct
32	Correct	301 ms	88256 KB	Output is correct
33	Correct	320 ms	88444 KB	Output is correct
34	Correct	296 ms	79480 KB	Output is correct
35	Correct	316 ms	88440 KB	Output is correct
36	Correct	312 ms	88580 KB	Output is correct
37	Correct	371 ms	88716 KB	Output is correct
38	Correct	208 ms	72312 KB	Output is correct
39	Correct	219 ms	72440 KB	Output is correct