#include "prize.h"
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx,avx2,fma")
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
/* DEFINES */
#define S second
#define F first
#define ll long long
#define ull unsigned long long
#define ld long double
#define npos ULLONG_MAX
#define INF LLONG_MAX
#define vv(a) vector<a>
#define pp(a, b) pair<a, b>
#define pq(a) priority_queue<a>
#define qq(a) queue<a>
#define ss(a) set<a>
#define mm(a, b) map<a, b>
#define ump(a, b) unordered_map<a, b>
#define ANDROID \
ios_base::sync_with_stdio(0); \
cin.tie(0); \
cout.tie(0);
#define elif else if
#define endl "\n"
#define allc(a) begin(a), end(a)
#define all(a) a, a + sizeof(a) / sizeof(a[0])
#define pb push_back
#define logi(a) __lg(a)
#define sqrt(a) sqrtl(a)
#define mpr make_pair
#define ins insert
using namespace std;
using namespace __gnu_pbds;
using namespace __cxx11;
typedef char chr;
typedef basic_string<chr> str;
template <typename T, typename key = less<T>>
using ordered_set = tree<T, null_type, key, rb_tree_tag, tree_order_statistics_node_update>;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
mm(ll, vv(int)) mp;
vv(int) query(ll x)
{
if (mp.count(x))
return mp[x];
return mp[x] = ask(x);
}
int find_best(int n)
{
if (n <= 5000)
{
for (int i = 0; i < n; i++)
{
std::vector<int> res = query(i);
if (res[0] + res[1] == 0)
return i;
}
}
pp(ll, ll) mx = mpr(-INF, -INF);
ll spartak5678 = 6 - (5-6) - (7-8), ind, l, r, mid;
vv(int) tmp, tmp1;
while (spartak5678--)
{
ll i = rng() % n;
tmp = query(i);
// cout << i << " ";
mx = max(mx, mpr(0ll + tmp[0] + tmp[1], i));
}
ind = mx.S;
// cout << ind << " ";
while (ind > 0)
{
while (ind >= 0)
{
tmp = query(ind);
if (tmp[0] + tmp[1] == mx.F)
break;
if (tmp[0] + tmp[1] == 0)
return ind;
ind--;
}
if (ind <= 0)
break;
l = 0, r = ind - 1;
tmp1 = query(ind);
while (l <= r)
{
mid = (l + r) >> 1;
tmp = query(mid);
if (tmp[0] + tmp[1] == 0) return mid;
if (tmp[0] < tmp1[0])
l = mid + 1;
else
r = mid - 1;
}
ind = --l;
}
ind = mx.S;
while (ind < n)
{
while (ind < n)
{
tmp = query(ind);
if (tmp[0] + tmp[1] == mx.F)
break;
if (tmp[0] + tmp[1] == 0)
return ind;
ind++;
}
l = ind + 1, r = n - 1;
tmp1 = query(ind);
while (l <= r)
{
mid = (l + r) >> 1;
tmp = query(mid);
if (tmp[0] + tmp[1] == 0) return mid;
if (tmp[1] < tmp1[1])
r = mid - 1;
else
l = mid + 1;
}
ind = ++r;
}
return 0;
}
