Submission #1053426

#	Time	Username	Problem	Language	Result	Execution time	Memory
1053426		ArthuroWich	Secret (JOI14_secret)	C++17	0 / 100	275 ms	8296 KiB

secret

#include "secret.h"
#include<bits/stdc++.h>
using namespace std;
int n, a[1005], arr[1005][1005];
void calc(int l, int r) {
    if (l == r) {
        arr[l][l] = a[l];
        return;
    }
    int m = (l+r)/2;
    arr[m][m] = a[m];
    arr[m+1][m+1] = a[m+1];
    for (int i = m-1; i >= l; i--) {
        arr[m][i] = Secret(a[i], arr[m][i+1]);
    }
    for (int i = m+2; i <= r; i++) {
        arr[m+1][i] = Secret(a[i], arr[m+1][i-1]);
    }
    calc(l, m);
    calc(m+1, r);
}
void Init(int N, int A[]) {
    n = N;
    for (int i = 0; i < n; i++) {
        a[i] = A[i];
    }
    calc(0, n-1);
}
int Query(int L, int R) {
    int l = 0, r = n-1;
    while(l < r) {
        int m = (l+r)/2;
        if (L <= m && m < R) {
            return Secret(arr[m][L], arr[m+1][R]);
        } else if (R == m) {
            return arr[m][L];
        } else if (R < m) {
            r = m;
        } else {
            l = m+1;
        }
    }
    return arr[l][l];
}

• Subtask 1: 0 / 100