Submission #1018219

#	Time	Username	Problem	Language	Result	Execution time	Memory
1018219		TsotneSV	Secret (JOI14_secret)	C++17	0 / 100	310 ms	4480 KiB

secret

#include "secret.h"
#include <bits/stdc++.h>
using namespace std;

const int MAXN = 1000;
const int LVL=15;

int DVC[LVL][MAXN],n;


void create(int l,int r,int lvl,int A[]) {

    if(l == r) {
        DVC[lvl][l] = A[l];
        return;
    }

    int m = (l + r)>>1; 
    DVC[lvl][m] = A[m]; 

    for(int i=m-1;i>=l;i--) DVC[lvl][i] = Secret(A[i],DVC[lvl][i+1]);
    

    DVC[lvl][m+1] = A[m+1];

    for(int i=m+2;i<=r;i++) DVC[lvl][i] = Secret(A[i],DVC[lvl][i-1]);

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

}

int get(int L,int R,int l,int r,int lvl) {

    if(l == r) return DVC[lvl][L];

    int m = (l + r)>>1;

    if(m >= R) return get(L,R,l,m,lvl+1);
    if(m+1 <= L) return get(L,R,m+1,r,lvl+1);
    return Secret(DVC[lvl][L],DVC[lvl][R]);

}

void Init(int N, int A[]) {

    n = N;

    create(0,n-1,0,A);

}

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

• Subtask 1: 0 / 100