#include "secret.h"
#include <bits/stdc++.h>
#define forr(_a,_b,_c) for(int _a = (_b); _a <= (_c); ++_a)
#define ford(_a,_b,_c) for(int _a = (_b) + 1; _a --> (_c);)
#define forf(_a,_b,_c) for(int _a = (_b); _a < (_c); ++_a)
#define st first
#define nd second
#define ll long long
#define ull unsigned long long
#define pii pair <int,int>
#define pll pair <ll,ll>
#define piii pair <int,pii>
#define vi vector <int>
#define pb push_back
#define mp make_pair
#define all(x) begin(x),end(x)
#define file "test"
using namespace std;
const int N = 2e3 + 5;
const ll oo = 1e9;
const ll mod = 1e9 + 7;
int a[N], n, f[N][N];
void calc (int l, int r){
if (r < l)
return;
int mid = (l + r) / 2;
f[mid][mid] = a[mid];
f[mid + 1][mid + 1] = a[mid + 1];
ford (i, mid - 1, l)
f[mid][i] = Secret(a[i], f[mid][i + 1]);
forr (i, mid + 2, r)
f[mid + 1][i] = Secret(a[i], f[mid + 1][i - 1]);
calc (l, mid - 1);
calc (mid + 1, r);
}
void Init (int u, int z[]){
n = u;
forf (i, 0, n)
a[i] = z[i];
calc (0, n - 1);
}
int query (int u, int v){
int l = 0, r = n - 1;
while (l < r){
int mid = (l + r) / 2;
if (mid >= u && mid < v) return Secret(f[mid][u], f[mid + 1][v]);
if (mid == v) return f[mid][u];
if (mid > u) r = mid - 1;
else l = mid + 1;
}
return f[l][l];
}
/*
*/
Compilation message
/usr/bin/ld: /tmp/ccOPR44n.o: in function `main':
grader-full.cpp:(.text.startup+0x30b): undefined reference to `Query(int, int)'
collect2: error: ld returned 1 exit status
