Submission #62079

#	Time	Username	Problem	Language	Result	Execution time	Memory
62079		reality	Hotter Colder (IOI10_hottercolder)	C++17	77 / 100	2667 ms	8200 KiB

hottercolder

#include "grader.h"
#include "bits/stdc++.h"
using namespace std;
#define fi first
#define se second
#define ll long long
#define dbg(v) cerr<<#v<<" = "<<v<<'\n'
#define vi vector<int>
#define vl vector <ll>
#define pii pair<int,int>
#define mp make_pair
#define db long double
#define pb push_back
#define all(s) s.begin(),s.end()
template < class T > T smin(T &a,T b) {if (a > b) a = b;return a;}
template < class T > T smax(T &a,T b) {if (a < b) a = b;return a;}
int step = 0;
int HC(int N){
	++step;
	srand(N * step);
	int l = 1,r = N;
	int prev = -1;
	while (l < r) {
		int cnt;
		if (prev == l) {
			cnt = Guess(r);
			prev = r;
		} else 
		if (prev == r) {
			cnt = Guess(l);
			prev = l;
			cnt *= -1;
		} else {
			if (rand() & 1) {
				Guess(l);
				cnt = Guess(r);
			} else {
				Guess(r);
				cnt = Guess(l);
				cnt *= -1;
			}
		}
		if (!cnt)
			return (l + r) / 2;
		if (cnt == 1) {
			l = (l + r + 2) / 2;
		} else {
			r = (l + r - 1) / 2;
		}
	}
	return l;
}

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