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Submission #941513

# Submission time Handle Problem Language Result Execution time Memory
941513 2024-03-09T04:02:00 Z peterandvoi Cat Exercise (JOI23_ho_t4) C++17
41 / 100
 25 ms 33088 KB 
#include <bits/stdc++.h>

using namespace std;

#ifdef ngu
#include "debug.h"
#else
#define debug(...) 42
#endif

#define int long long

const int N = (int) 2e5 + 5;
const int LOG = 18;

int n;
int p[N], lg[N];
int st[LOG][N];

int cmb(int a, int b) {
    return p[a] > p[b] ? a : b;
}

int get(int l, int r) {
    int k = lg[r - l + 1];
    return cmb(st[k][l], st[k][r - (1 << k) + 1]);
}

int dnc(int l, int r) {
    if (l == r) {
        return 0;
    }
    int mid = get(l, r);
    if (l == mid) {
        return abs(mid - get(l + 1, r)) + dnc(l + 1, r);
    }
    if (mid == r) {
        return abs(mid - get(l, r - 1)) + dnc(l, r - 1);
    }
    return max(abs(mid - get(mid + 1, r)) + dnc(mid + 1, r), abs(mid - get(l, mid - 1)) + dnc(l, mid - 1));
}

signed main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    #ifdef ngu
    freopen("test.inp", "r", stdin);
    freopen("test.out", "w", stdout);
    #endif
    int n;
    cin >> n;
    for (int i = 1; i <= n; ++i) {
        if (i > 1) {
            lg[i] = lg[i / 2] + 1;
        }
        cin >> p[i];
    }
    iota(st[0] + 1, st[0] + n + 1, 1);
    assert(lg[n] < LOG);
    for (int j = 1; j <= lg[n]; ++j) {
        for (int i = 1; i + (1 << j) - 1 <= n; ++i) {
            st[j][i] = cmb(st[j - 1][i], st[j - 1][i + (1 << (j - 1))]);
        }
    }
    cout << dnc(1, n);
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6488 KB Output is correct
2 Correct 1 ms 8792 KB Output is correct
3 Correct 2 ms 8540 KB Output is correct
4 Correct 1 ms 8540 KB Output is correct
5 Correct 2 ms 8540 KB Output is correct
6 Correct 1 ms 8540 KB Output is correct
7 Correct 2 ms 4672 KB Output is correct
8 Correct 1 ms 8540 KB Output is correct
9 Correct 1 ms 8540 KB Output is correct
10 Correct 1 ms 8540 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6488 KB Output is correct
2 Correct 1 ms 8792 KB Output is correct
3 Correct 2 ms 8540 KB Output is correct
4 Correct 1 ms 8540 KB Output is correct
5 Correct 2 ms 8540 KB Output is correct
6 Correct 1 ms 8540 KB Output is correct
7 Correct 2 ms 4672 KB Output is correct
8 Correct 1 ms 8540 KB Output is correct
9 Correct 1 ms 8540 KB Output is correct
10 Correct 1 ms 8540 KB Output is correct
11 Correct 2 ms 16732 KB Output is correct
12 Correct 2 ms 16732 KB Output is correct
13 Correct 2 ms 16728 KB Output is correct
14 Correct 2 ms 16732 KB Output is correct
15 Correct 2 ms 16732 KB Output is correct
16 Correct 2 ms 16732 KB Output is correct
17 Correct 2 ms 16732 KB Output is correct

Subtask #3
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6488 KB Output is correct
2 Correct 1 ms 8792 KB Output is correct
3 Correct 2 ms 8540 KB Output is correct
4 Correct 1 ms 8540 KB Output is correct
5 Correct 2 ms 8540 KB Output is correct
6 Correct 1 ms 8540 KB Output is correct
7 Correct 2 ms 4672 KB Output is correct
8 Correct 1 ms 8540 KB Output is correct
9 Correct 1 ms 8540 KB Output is correct
10 Correct 1 ms 8540 KB Output is correct
11 Correct 2 ms 16732 KB Output is correct
12 Correct 2 ms 16732 KB Output is correct
13 Correct 2 ms 16728 KB Output is correct
14 Correct 2 ms 16732 KB Output is correct
15 Correct 2 ms 16732 KB Output is correct
16 Correct 2 ms 16732 KB Output is correct
17 Correct 2 ms 16732 KB Output is correct
18 Correct 3 ms 22872 KB Output is correct
19 Correct 3 ms 23128 KB Output is correct
20 Correct 3 ms 23132 KB Output is correct
21 Correct 4 ms 22876 KB Output is correct
22 Correct 3 ms 22872 KB Output is correct
23 Correct 3 ms 22876 KB Output is correct
24 Correct 3 ms 22872 KB Output is correct

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6488 KB Output is correct
2 Correct 1 ms 8792 KB Output is correct
3 Correct 2 ms 8540 KB Output is correct
4 Correct 1 ms 8540 KB Output is correct
5 Correct 2 ms 8540 KB Output is correct
6 Correct 1 ms 8540 KB Output is correct
7 Correct 2 ms 4672 KB Output is correct
8 Correct 1 ms 8540 KB Output is correct
9 Correct 1 ms 8540 KB Output is correct
10 Correct 1 ms 8540 KB Output is correct
11 Correct 2 ms 16732 KB Output is correct
12 Correct 2 ms 16732 KB Output is correct
13 Correct 2 ms 16728 KB Output is correct
14 Correct 2 ms 16732 KB Output is correct
15 Correct 2 ms 16732 KB Output is correct
16 Correct 2 ms 16732 KB Output is correct
17 Correct 2 ms 16732 KB Output is correct
18 Correct 3 ms 22872 KB Output is correct
19 Correct 3 ms 23128 KB Output is correct
20 Correct 3 ms 23132 KB Output is correct
21 Correct 4 ms 22876 KB Output is correct
22 Correct 3 ms 22872 KB Output is correct
23 Correct 3 ms 22876 KB Output is correct
24 Correct 3 ms 22872 KB Output is correct
25 Correct 1 ms 6492 KB Output is correct
26 Incorrect 3 ms 22876 KB Output isn't correct
27 Halted 0 ms 0 KB -

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6488 KB Output is correct
2 Correct 1 ms 8792 KB Output is correct
3 Correct 2 ms 8540 KB Output is correct
4 Correct 1 ms 8540 KB Output is correct
5 Correct 2 ms 8540 KB Output is correct
6 Correct 1 ms 8540 KB Output is correct
7 Correct 2 ms 4672 KB Output is correct
8 Correct 1 ms 8540 KB Output is correct
9 Correct 1 ms 8540 KB Output is correct
10 Correct 1 ms 8540 KB Output is correct
11 Correct 2 ms 16732 KB Output is correct
12 Correct 2 ms 16732 KB Output is correct
13 Correct 2 ms 16728 KB Output is correct
14 Correct 2 ms 16732 KB Output is correct
15 Correct 2 ms 16732 KB Output is correct
16 Correct 2 ms 16732 KB Output is correct
17 Correct 2 ms 16732 KB Output is correct
18 Correct 3 ms 22872 KB Output is correct
19 Correct 3 ms 23128 KB Output is correct
20 Correct 3 ms 23132 KB Output is correct
21 Correct 4 ms 22876 KB Output is correct
22 Correct 3 ms 22872 KB Output is correct
23 Correct 3 ms 22876 KB Output is correct
24 Correct 3 ms 22872 KB Output is correct
25 Correct 20 ms 30556 KB Output is correct
26 Correct 22 ms 32764 KB Output is correct
27 Correct 24 ms 33088 KB Output is correct
28 Correct 23 ms 31984 KB Output is correct
29 Correct 25 ms 32060 KB Output is correct
30 Correct 23 ms 32080 KB Output is correct
31 Correct 25 ms 32092 KB Output is correct

Subtask #6
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Incorrect 2 ms 14684 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #7
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6488 KB Output is correct
2 Correct 1 ms 8792 KB Output is correct
3 Correct 2 ms 8540 KB Output is correct
4 Correct 1 ms 8540 KB Output is correct
5 Correct 2 ms 8540 KB Output is correct
6 Correct 1 ms 8540 KB Output is correct
7 Correct 2 ms 4672 KB Output is correct
8 Correct 1 ms 8540 KB Output is correct
9 Correct 1 ms 8540 KB Output is correct
10 Correct 1 ms 8540 KB Output is correct
11 Correct 2 ms 16732 KB Output is correct
12 Correct 2 ms 16732 KB Output is correct
13 Correct 2 ms 16728 KB Output is correct
14 Correct 2 ms 16732 KB Output is correct
15 Correct 2 ms 16732 KB Output is correct
16 Correct 2 ms 16732 KB Output is correct
17 Correct 2 ms 16732 KB Output is correct
18 Correct 3 ms 22872 KB Output is correct
19 Correct 3 ms 23128 KB Output is correct
20 Correct 3 ms 23132 KB Output is correct
21 Correct 4 ms 22876 KB Output is correct
22 Correct 3 ms 22872 KB Output is correct
23 Correct 3 ms 22876 KB Output is correct
24 Correct 3 ms 22872 KB Output is correct
25 Correct 1 ms 6492 KB Output is correct
26 Incorrect 3 ms 22876 KB Output isn't correct
27 Halted 0 ms 0 KB -