Submission #556704

#	Time	Username	Problem	Language	Result	Execution time	Memory
556704		MohamedFaresNebili	Hotter Colder (IOI10_hottercolder)	C++14	85 / 100	576 ms	9108 KiB

hottercolder

#include <bits/stdc++.h>
#include "grader.h"

        using namespace std;

        using ll = long long;
        using ii = pair<ll, ll>;
        using vi = vector<int>;

        #define ff first
        #define ss second
        #define pb push_back
        #define all(x) (x).begin(), (x).end()
        #define lb lower_bound
        /// #define int ll

        const int oo = 1e9 + 7;

        int Guess(int v);

        int HC(int N) {
            int lo = 1, hi = N, pr = (2 * N - 2) / 3;
            pr = max(1, pr); pr = min(N, pr);
            Guess(pr);
            while(lo < hi) {
                int to = (lo + hi) / 2;

              	if(to == pr && to - 1 >= lo) to--;
              	if(to == pr && to + 1 <= hi) to++;
              	if(to == pr) return to;

                int r = Guess(to), md = abs(to - pr);
                if(md & 1) md++;

                if(r == 0) return (to + pr) / 2;
                else if((r == 1 && to > pr) || (r == -1 && to < pr))
                    lo = max(lo, (to + pr) / 2 + 1);
                else hi = min(hi, (to + pr + 1) / 2 - 1);
                pr = to;
            }
            return lo;
        }

• Subtask 1: 25 / 25
• Subtask 2: 25 / 25
• Subtask 3: 25 / 25
• Subtask 4: 10 / 25