oj.uz

Submission #869215

# Submission time Handle Problem Language Result Execution time Memory
869215 2023-11-03T14:11:48 Z goodspeed0208 JJOOII 2 (JOI20_ho_t2) C++14
100 / 100
 55 ms 14312 KB 
#include<iostream>
#include<vector>
#include<algorithm>
using namespace std;

signed main() {
	int n, k;
	cin >> n>> k;
	string s;
	cin >> s;
	vector<int>v(n);
	for (int i = 0 ; i < n ; i++) {
		if (s[i] == 'J') v[i] = 0;
		else if (s[i] == 'O') v[i] = 1;
		else v[i] = 2;
	}
	vector<vector<int> >num(n, vector<int>(3, 0));
	vector<vector<int> >pos(3);
	num[0][v[0]]++;
	pos[v[0]].push_back(0);
	for (int i = 1 ; i < n ; i++) {
		num[i] = num[i-1];
		num[i][v[i]] = num[i-1][v[i]]+1;
		pos[v[i]].push_back(i);
	} 
	int mn = -1;
	for (int i = 0 ; i < n ; i++) {
		int l = i+k*3-2, r = n;
		while (l+1 < r) {
			int j = (l + r) / 2;
			//cout << l << " " << r << " " << j << endl;
			int numj, numi;
			if (i == 0) numj = 0;
			else numj = num[i-1][0];
			numi = num[j][2];
			if (numj + k > pos[0].size() || numi < k) {
				l = j;
				continue;
			}
			int posj = pos[0][(numj + k) - 1];
			int posi = pos[2][(numi - k + 1) - 1];
			if (num[posi][1] - num[posj][1] >= k) {
				//cout << i << " " << j << "\n";
				
				r = j;
			} else {
				l = j;
			}
		}
		if (r == n) break;
		//cout << i << " " << r << "\n";
		if (mn == -1) mn = r - i + 1;
		else mn = min(mn, r-i+1);
		//for (int j = i+k*3-1 ; j < n ; j++) {
			
		//}
	}
	if (mn == -1) cout << "-1\n";
	else cout << mn - k * 3 << "\n";
}

Compilation message

ho_t2.cpp: In function 'int main()':
ho_t2.cpp:36:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |    if (numj + k > pos[0].size() || numi < k) {
      |        ~~~~~~~~~^~~~~~~~~~~~~~~

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 1 ms 604 KB Output is correct
17 Correct 1 ms 604 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 1 ms 604 KB Output is correct
20 Correct 1 ms 428 KB Output is correct
21 Correct 1 ms 600 KB Output is correct
22 Correct 0 ms 604 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 1 ms 604 KB Output is correct
25 Correct 0 ms 604 KB Output is correct
26 Correct 1 ms 600 KB Output is correct
27 Correct 0 ms 604 KB Output is correct
28 Correct 1 ms 604 KB Output is correct
29 Correct 0 ms 604 KB Output is correct
30 Correct 1 ms 604 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 1 ms 604 KB Output is correct
33 Correct 1 ms 604 KB Output is correct
34 Correct 1 ms 604 KB Output is correct
35 Correct 1 ms 604 KB Output is correct

Subtask #3
87.0 / 87.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 1 ms 604 KB Output is correct
17 Correct 1 ms 604 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 1 ms 604 KB Output is correct
20 Correct 1 ms 428 KB Output is correct
21 Correct 1 ms 600 KB Output is correct
22 Correct 0 ms 604 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 1 ms 604 KB Output is correct
25 Correct 0 ms 604 KB Output is correct
26 Correct 1 ms 600 KB Output is correct
27 Correct 0 ms 604 KB Output is correct
28 Correct 1 ms 604 KB Output is correct
29 Correct 0 ms 604 KB Output is correct
30 Correct 1 ms 604 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 1 ms 604 KB Output is correct
33 Correct 1 ms 604 KB Output is correct
34 Correct 1 ms 604 KB Output is correct
35 Correct 1 ms 604 KB Output is correct
36 Correct 48 ms 12312 KB Output is correct
37 Correct 52 ms 13344 KB Output is correct
38 Correct 51 ms 13404 KB Output is correct
39 Correct 52 ms 13516 KB Output is correct
40 Correct 22 ms 13672 KB Output is correct
41 Correct 41 ms 13928 KB Output is correct
42 Correct 55 ms 13668 KB Output is correct
43 Correct 9 ms 8680 KB Output is correct
44 Correct 12 ms 10568 KB Output is correct
45 Correct 15 ms 13744 KB Output is correct
46 Correct 16 ms 13672 KB Output is correct
47 Correct 17 ms 13684 KB Output is correct
48 Correct 15 ms 13800 KB Output is correct
49 Correct 11 ms 9064 KB Output is correct
50 Correct 15 ms 13756 KB Output is correct
51 Correct 17 ms 13676 KB Output is correct
52 Correct 14 ms 12904 KB Output is correct
53 Correct 16 ms 13912 KB Output is correct
54 Correct 24 ms 13800 KB Output is correct
55 Correct 19 ms 13800 KB Output is correct
56 Correct 17 ms 14312 KB Output is correct