Submission #146320

#	Time	Username	Problem	Language	Result	Execution time	Memory
146320		popovicirobert	Hotter Colder (IOI10_hottercolder)	C++14	75 / 100	687 ms	124092 KiB

hottercolder

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

using namespace std;

int HC(int n){
    int res = 1, last = 0, taken = 0;
    for(int step = 1 << 8; step > 2; step >>= 1) {
        if(res + step <= n) {
            Guess(res + step - 2);
            int cur = Guess(res + step);
            if(cur == 1) {
                res += step;
                taken = step;
            }
            else if(cur == 0) {
                return res + step - 1;
            }
            last = step;
        }
    }
    if(res == n) {
        return n;
    }
    if(res == n - 1) {
        Guess(res);
        if(Guess(res + 1) == 1) return res + 1;
        return res;
    }
    if(last == 0) {
        Guess(res);
    }
    int a, b;
    if(res == n - 2 || last != taken) {
        Guess(res);
        a = Guess(res + 2);
        if(a == 0) return res + 1;
        if(a == 1) return res + 2;
        return res;
    }

    a = Guess(res + 1);
    b = Guess(res + 3);

    //cerr << a << " " << b << "\n";

    if(b == 0) return res + 2;
    if(a == -1) return res;
    if(a == 1 && b == -1) return res + 1;
    return res + 3;

}

• Subtask 1: 25 / 25
• Subtask 2: 25 / 25
• Subtask 3: 25 / 25
• Subtask 4: 0 / 25