oj.uz

Submission #1015221

# Submission time Handle Problem Language Result Execution time Memory
1015221 2024-07-06T07:39:06 Z aufan JJOOII 2 (JOI20_ho_t2) C++17
100 / 100
 34 ms 12060 KB 
#include <bits/stdc++.h>
#define int long long
#define fi first
#define se second

using namespace std;

const int inf = 1e9;

int32_t main()
{
        ios_base::sync_with_stdio(false);
        cin.tie(NULL);
        
        int n, k;
        cin >> n >> k;

        string s;
        cin >> s;
        s = '?' + s;

        vector<vector<int>> pref(n + 1, vector<int>(3));
        for (int i = 1; i <= n; i++) {
                pref[i] = pref[i - 1];
                if (s[i] == 'J') pref[i][0] += 1;
                if (s[i] == 'O') pref[i][1] += 1;
                if (s[i] == 'I') pref[i][2] += 1;
        }

        int p = 1, ans = inf;
        for (int i = 1; i <= n; i++) {
                while (p + 1 <= n && pref[p][1] - pref[i - 1][1] < k) p += 1;
                if (pref[p][1] - pref[i - 1][1] < k) break;

                int lf = 1, rg = i - 1, pl = -1;
                while (lf <= rg) {
                        int md = (lf + rg) / 2;

                        if (pref[i - 1][0] - pref[md - 1][0] >= k) {
                                pl = md;
                                lf = md + 1;
                        } else {
                                rg = md - 1;
                        }
                }

                if (pl == -1) continue;

                int pr = -1;
                lf = p + 1, rg = n;
                while (lf <= rg) {
                        int md = (lf + rg) / 2;

                        if (pref[md][2] - pref[p][2] >= k) {
                                pr = md;
                                rg = md - 1;
                        } else {
                                lf = md + 1;
                        }
                }

                if (pr == -1) continue;

                ans = min(ans, (pr - pl + 1) - 3 * k);
        }
        
        cout << (ans == inf ? -1 : ans) << '\n';
        
        return 0;
}

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 452 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 460 KB Output is correct
11 Correct 0 ms 456 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 460 KB Output is correct
14 Correct 0 ms 456 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 452 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 460 KB Output is correct
11 Correct 0 ms 456 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 460 KB Output is correct
14 Correct 0 ms 456 KB Output is correct
15 Correct 1 ms 348 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 604 KB Output is correct
21 Correct 1 ms 604 KB Output is correct
22 Correct 1 ms 456 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 1 ms 604 KB Output is correct
25 Correct 1 ms 604 KB Output is correct
26 Correct 1 ms 604 KB Output is correct
27 Correct 1 ms 560 KB Output is correct
28 Correct 1 ms 456 KB Output is correct
29 Correct 1 ms 456 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 0 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 452 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 460 KB Output is correct
11 Correct 0 ms 456 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 460 KB Output is correct
14 Correct 0 ms 456 KB Output is correct
15 Correct 1 ms 348 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 604 KB Output is correct
21 Correct 1 ms 604 KB Output is correct
22 Correct 1 ms 456 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 1 ms 604 KB Output is correct
25 Correct 1 ms 604 KB Output is correct
26 Correct 1 ms 604 KB Output is correct
27 Correct 1 ms 560 KB Output is correct
28 Correct 1 ms 456 KB Output is correct
29 Correct 1 ms 456 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 0 ms 604 KB Output is correct
35 Correct 1 ms 604 KB Output is correct
36 Correct 28 ms 11032 KB Output is correct
37 Correct 26 ms 11812 KB Output is correct
38 Correct 34 ms 11744 KB Output is correct
39 Correct 28 ms 11556 KB Output is correct
40 Correct 22 ms 11812 KB Output is correct
41 Correct 25 ms 11808 KB Output is correct
42 Correct 32 ms 11812 KB Output is correct
43 Correct 11 ms 7516 KB Output is correct
44 Correct 16 ms 9156 KB Output is correct
45 Correct 20 ms 11812 KB Output is correct
46 Correct 18 ms 11704 KB Output is correct
47 Correct 17 ms 11740 KB Output is correct
48 Correct 21 ms 11828 KB Output is correct
49 Correct 12 ms 7896 KB Output is correct
50 Correct 19 ms 11808 KB Output is correct
51 Correct 18 ms 11812 KB Output is correct
52 Correct 15 ms 11392 KB Output is correct
53 Correct 13 ms 12060 KB Output is correct
54 Correct 33 ms 11812 KB Output is correct
55 Correct 14 ms 11812 KB Output is correct
56 Correct 14 ms 11592 KB Output is correct