#include "secret.h"
#include <bits/stdc++.h>
using namespace std;
const int MAXN = 1005;
const int LVL=15;
int DAQ[LVL][MAXN],n,arr[MAXN];
void go(int l,int r,int lev) {
if(l == r) {
DAQ[lev][l] = arr[l];
return;
}
int m = (l + r)>>1;
DAQ[lev][m] = arr[m]; DAQ[lev][m+1] = arr[m+1];
for(int i=m-1;i>=l;i--) {
DAQ[lev][i] = Secret(arr[i],DAQ[lev][i+1]);
}
for(int i=m+2;i<=r;i++) {
DAQ[lev][i] = Secret(arr[i],DAQ[lev][i-1]);
}
go(l,m,lev+1);
go(m+1,r,lev+1);
}
void Init(int N, int A[]) {
n = N;
for(int i=0;i<n;i++) arr[i] = A[i];
go(0,n-1,0);
}
int f(int l,int r,int tl,int tr,int lev) {
if(tl == tr) return DAQ[lev][l];
int m = (tl + tr)>>1;
if(m >= r) return f(l,r,tl,m,lev+1);
if(m+1 <= l) return f(l,r,m+1,tr,lev+1);
return Secret(DAQ[lev][l],DAQ[lev][r]);
}
int Query(int L, int R) {
return f(L,R,0,n-1,0);
}
