#include "secret.h"
#include <bits/stdc++.h>
using namespace std;
int n, pref[1005][15], a[1005], mask[1005];
void build(int l, int r, int h)
{
if (l == r) return;
int m = l + r >> 1;
pref[m][h] = a[m];
for (int i = m - 1; i >= l; i--) pref[i][h] = Secret(pref[i + 1][h], a[i]);
pref[m + 1][h] = a[m + 1];
for (int i = m + 2; i <= r; i++) pref[i][h] = Secret(pref[i - 1][h], a[i]);
for (int i = m + 1; i <= r; i++) mask[i] |= 1 << h;
if (l != m) build(l, m, h + 1);
if (m + 1 != r) build(m + 1, r, h + 1);
}
void Init(int N, int A[])
{
n = N;
for (int i = 1; i <= N; i++) a[i] = A[i - 1];
build(1, N, 0);
}
int Query(int L, int R)
{
if (L == R) return(a[L + 1]);
else
{
// int h = __builtin_ctz(mask[L + 1] ^ mask[R + 1]);
// return(Secret(pref[L + 1][h], pref[R + 1][h]));
int l = 1, r = n, h = 0;
while (l < r)
{
int m = l + r >.> 1;
if (L + 1 <= m && m + 1 <= R + 1) return(Secret(pref[L + 1][h], pref[R + 1][h]));
else if (L + 1 > m)
{
l = m + 1;
h++;
}
else if (m + 1 > R + 1)
{
r = m;
h++;
}
}
}
}
//coded by icyalmond
Compilation message
secret.cpp: In function 'void build(int, int, int)':
secret.cpp:10:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
10 | int m = l + r >> 1;
| ~~^~~
secret.cpp: In function 'int Query(int, int)':
secret.cpp:37:28: error: expected primary-expression before '.' token
37 | int m = l + r >.> 1;
| ^
secret.cpp:37:29: error: expected unqualified-id before '>' token
37 | int m = l + r >.> 1;
| ^
secret.cpp:51:1: warning: control reaches end of non-void function [-Wreturn-type]
51 | }
| ^
