Submission #211186

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
211186	2020-03-19T11:26:52 Z	DodgeBallMan	JJOOII 2 (JOI20_ho_t2)	C++14	100 / 100	36 ms	3072 KB

ho_t2

#include<bits/stdc++.h>
using namespace std;
 
int cnt[4][200200];
char str[200200];
unordered_map<char, int> m;
 
int main()
{
	m['J'] = 1;
	m['O'] = 2;
	m['I'] = 3;
	int n, k, ans = 1e9;
	scanf(" %d %d",&n,&k);
	scanf(" %s",str+1);
	for(int i=1 ; i<=n ; i++)
	{
		cnt[m[str[i]]][i]++;
		for(int j=1 ; j<=3 ; j++)
			cnt[j][i] += cnt[j][i-1];
	}
	for(int i=1 ; i<=n-k-k ; i++)
	{
		if(cnt[1][i] >= k)
		{
			int l = 1, r = i;
			while(l!=r)
			{
				int mid = (l+r+1)>>1;
				if(cnt[1][i] - cnt[1][mid-1] >=k) l = mid;
				else r = mid-1;
			}
			int x = l;
			l = i+1, r = n;
			while(l!=r)
			{
				int mid = (l+r)>>1;
				if(cnt[2][mid] - cnt[2][i] >= k) r = mid;
				else l = mid+1;
			}
			if(cnt[2][l] - cnt[2][i] < k || cnt[3][n] - cnt[3][l] < k) goto out;
			int j = l;
			l = j+1, r = n;
			while(l!=r)
			{
				int mid = (l+r)>>1;
				if(cnt[3][mid] - cnt[3][j] >= k) r = mid;
				else l = mid+1;
			}
			int y = l;
			ans = min(ans, y-x+1-k-k-k);
		}
		out: ;
	}
	printf((ans == 1e9) ? "-1\n" : "%d\n", ans);
	return 0;
}

Compilation message

ho_t2.cpp: In function 'int main()':
ho_t2.cpp:14:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf(" %d %d",&n,&k);
  ~~~~~^~~~~~~~~~~~~~~~
ho_t2.cpp:15:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf(" %s",str+1);
  ~~~~~^~~~~~~~~~~~~

Subtask #1
1.0 / 1.0

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

Subtask #2
12.0 / 12.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	384 KB	Output is correct
2	Correct	5 ms	384 KB	Output is correct
3	Correct	5 ms	384 KB	Output is correct
4	Correct	9 ms	384 KB	Output is correct
5	Correct	5 ms	384 KB	Output is correct
6	Correct	5 ms	384 KB	Output is correct
7	Correct	5 ms	384 KB	Output is correct
8	Correct	5 ms	384 KB	Output is correct
9	Correct	5 ms	384 KB	Output is correct
10	Correct	5 ms	384 KB	Output is correct
11	Correct	5 ms	384 KB	Output is correct
12	Correct	5 ms	384 KB	Output is correct
13	Correct	5 ms	384 KB	Output is correct
14	Correct	5 ms	384 KB	Output is correct
15	Correct	5 ms	308 KB	Output is correct
16	Correct	5 ms	384 KB	Output is correct
17	Correct	5 ms	384 KB	Output is correct
18	Correct	5 ms	384 KB	Output is correct
19	Correct	5 ms	384 KB	Output is correct
20	Correct	5 ms	384 KB	Output is correct
21	Correct	5 ms	384 KB	Output is correct
22	Correct	5 ms	384 KB	Output is correct
23	Correct	5 ms	384 KB	Output is correct
24	Correct	5 ms	384 KB	Output is correct
25	Correct	5 ms	384 KB	Output is correct
26	Correct	5 ms	384 KB	Output is correct
27	Correct	5 ms	384 KB	Output is correct
28	Correct	5 ms	384 KB	Output is correct
29	Correct	5 ms	384 KB	Output is correct
30	Correct	5 ms	384 KB	Output is correct
31	Correct	5 ms	384 KB	Output is correct
32	Correct	5 ms	384 KB	Output is correct
33	Correct	5 ms	384 KB	Output is correct
34	Correct	5 ms	384 KB	Output is correct
35	Correct	5 ms	384 KB	Output is correct

Subtask #3
87.0 / 87.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	384 KB	Output is correct
2	Correct	5 ms	384 KB	Output is correct
3	Correct	5 ms	384 KB	Output is correct
4	Correct	9 ms	384 KB	Output is correct
5	Correct	5 ms	384 KB	Output is correct
6	Correct	5 ms	384 KB	Output is correct
7	Correct	5 ms	384 KB	Output is correct
8	Correct	5 ms	384 KB	Output is correct
9	Correct	5 ms	384 KB	Output is correct
10	Correct	5 ms	384 KB	Output is correct
11	Correct	5 ms	384 KB	Output is correct
12	Correct	5 ms	384 KB	Output is correct
13	Correct	5 ms	384 KB	Output is correct
14	Correct	5 ms	384 KB	Output is correct
15	Correct	5 ms	308 KB	Output is correct
16	Correct	5 ms	384 KB	Output is correct
17	Correct	5 ms	384 KB	Output is correct
18	Correct	5 ms	384 KB	Output is correct
19	Correct	5 ms	384 KB	Output is correct
20	Correct	5 ms	384 KB	Output is correct
21	Correct	5 ms	384 KB	Output is correct
22	Correct	5 ms	384 KB	Output is correct
23	Correct	5 ms	384 KB	Output is correct
24	Correct	5 ms	384 KB	Output is correct
25	Correct	5 ms	384 KB	Output is correct
26	Correct	5 ms	384 KB	Output is correct
27	Correct	5 ms	384 KB	Output is correct
28	Correct	5 ms	384 KB	Output is correct
29	Correct	5 ms	384 KB	Output is correct
30	Correct	5 ms	384 KB	Output is correct
31	Correct	5 ms	384 KB	Output is correct
32	Correct	5 ms	384 KB	Output is correct
33	Correct	5 ms	384 KB	Output is correct
34	Correct	5 ms	384 KB	Output is correct
35	Correct	5 ms	384 KB	Output is correct
36	Correct	27 ms	2944 KB	Output is correct
37	Correct	30 ms	3072 KB	Output is correct
38	Correct	31 ms	3072 KB	Output is correct
39	Correct	34 ms	3072 KB	Output is correct
40	Correct	23 ms	3072 KB	Output is correct
41	Correct	31 ms	3072 KB	Output is correct
42	Correct	36 ms	3072 KB	Output is correct
43	Correct	13 ms	2048 KB	Output is correct
44	Correct	15 ms	2432 KB	Output is correct
45	Correct	18 ms	3072 KB	Output is correct
46	Correct	19 ms	3072 KB	Output is correct
47	Correct	19 ms	3072 KB	Output is correct
48	Correct	20 ms	3072 KB	Output is correct
49	Correct	14 ms	2176 KB	Output is correct
50	Correct	19 ms	3048 KB	Output is correct
51	Correct	22 ms	3072 KB	Output is correct
52	Correct	10 ms	2944 KB	Output is correct
53	Correct	11 ms	3072 KB	Output is correct
54	Correct	31 ms	3068 KB	Output is correct
55	Correct	19 ms	3072 KB	Output is correct
56	Correct	10 ms	3072 KB	Output is correct

Submission #211186

Compilation message

Subtask #1 1.0 / 1.0

Subtask #2 12.0 / 12.0

Subtask #3 87.0 / 87.0

Subtask #1
1.0 / 1.0

Subtask #2
12.0 / 12.0

Subtask #3
87.0 / 87.0