# | Time | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
319564 | ehdtjskaqhd | Hotter Colder (IOI10_hottercolder) | C++17 | 0 ms | 0 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
#include "grader.h"
using namespace std;
int HC(int N)
{
int l = 1, r = N, res, lg = -1;
auto gs = [&](int g) -> int {return Guess(lg = g);};
while (r - l > 1)
{
if (lg == l) res = gs(r);
else if (lg == r) res = -gs(l);
else gs(l), res = gs(r);
debug() << imie(l) << imie(r) << imie(res);
int mid = (l + r) / 2, adj = (l + r) % 2;
if (!res) return mid;
else if (~res) l = mid + adj;
else r = mid;
}
return res > 0 ? r : l;
}