#include <bits/stdc++.h>
#include "secret.h"
using namespace std;
typedef long long ll;
int N, A[1000007], Q;
ll dat[17][1007], mask[1007];
vector<ll> v;
// int Secret(int a, int b) {
// return a + b;
// }
void divi(ll l, ll r, ll lev, int A[]) {
if (l == r) return;
ll mid = (l + r) / 2;
dat[lev][mid] = A[mid];
for(int i = mid - 1; i >= l; --i) {
dat[lev][i] = Secret(A[i], dat[lev][i + 1]);
}
dat[lev][mid + 1] = A[mid + 1];
for(int i = mid + 2; i <= r; ++i) {
dat[lev][i] = Secret(dat[lev][i - 1], A[i]);
}
for(int i = mid + 1; i <= r; ++i) mask[i] ^= (1 << lev);
divi(l, mid, lev + 1, A);
divi(mid + 1, r, lev + 1, A);
}
void Init(int N, int A[]) {
cin >> N;
for(int i = 1; i <= N; ++i) cin >> A[i];
divi(1, N, 0, A);
for(int i = 1; i <= N; ++i) v.push_back(A[i]);
}
int Query(int l, int r) {
l++;
r++;
if (l == r) return v[i - 1];
int bits = __builtin_ctz(mask[l] ^ mask[r]);
return Secret(dat[bits][l], dat[bits][r]);
}
Compilation message
secret.cpp: In function 'int Query(int, int)':
secret.cpp:41:23: error: 'i' was not declared in this scope
41 | if (l == r) return v[i - 1];
| ^
