oj.uz

Submission #1043404

# Submission time Handle Problem Language Result Execution time Memory
1043404 2024-08-04T09:07:32 Z BF001 Secret (JOI14_secret) C++17
100 / 100
 278 ms 4436 KB 
#include "secret.h"
#include <bits/stdc++.h>
using namespace std;

const int maxn = 1000;
const int maxlvl = 15;

int n;
int rt[maxlvl][maxn], lf[maxlvl][maxn];

void create(int lvl, int l, int r, int A[]) {
    if (l == r) {
        lf[lvl][l] = A[l];
        return;
    }
    int m = (l + r) >> 1;
    // left side
    lf[lvl][m] = A[m];
    for (int i = m - 1; i >= l; i--) lf[lvl][i] = Secret(A[i], lf[lvl][i + 1]);
    // right side
    rt[lvl][m + 1] = A[m + 1];
    for (int i = m + 2; i <= r; i++) rt[lvl][i] = Secret(rt[lvl][i - 1], A[i]);

    create(lvl + 1, l, m, A);
    create(lvl + 1, m + 1, r, A);
}

int get(int lvl, int l, int r, int L, int R) {
    if (l == r) return lf[lvl][L];
    int m = (l + r) >> 1;
    if (R <= m) return get(lvl + 1, l, m, L, R);
    if (L >= m+1) return get(lvl + 1, m+1, r, L, R);
    return Secret(lf[lvl][L], rt[lvl][R]);
}

void Init(int N, int A[]) {
    n = N;
    create(0, 0, n - 1, A);
}

int Query(int L, int R) {
    return get(0, 0, n - 1, L, R);
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 71 ms 2740 KB Output is correct - number of calls to Secret by Init = 3578, maximum number of calls to Secret by Query = 1
2 Correct 71 ms 2740 KB Output is correct - number of calls to Secret by Init = 3586, maximum number of calls to Secret by Query = 1
3 Correct 71 ms 2652 KB Output is correct - number of calls to Secret by Init = 3595, maximum number of calls to Secret by Query = 1
4 Correct 278 ms 4436 KB Output is correct - number of calls to Secret by Init = 7969, maximum number of calls to Secret by Query = 1
5 Correct 265 ms 4432 KB Output is correct - number of calls to Secret by Init = 7978, maximum number of calls to Secret by Query = 1
6 Correct 263 ms 4436 KB Output is correct - number of calls to Secret by Init = 7978, maximum number of calls to Secret by Query = 1
7 Correct 271 ms 4436 KB Output is correct - number of calls to Secret by Init = 7978, maximum number of calls to Secret by Query = 1
8 Correct 259 ms 4268 KB Output is correct - number of calls to Secret by Init = 7978, maximum number of calls to Secret by Query = 1
9 Correct 273 ms 4272 KB Output is correct - number of calls to Secret by Init = 7978, maximum number of calls to Secret by Query = 1
10 Correct 264 ms 4268 KB Output is correct - number of calls to Secret by Init = 7978, maximum number of calls to Secret by Query = 1