제출 #356458

#제출 시각아이디문제언어결과실행 시간메모리
356458MefarnisHotter Colder (IOI10_hottercolder)C++14
0 / 100
882 ms152584 KiB
#include <bits/stdc++.h>
#include "grader.h"
using namespace std;

int HC(int n) {
	int l = 1 , r = n , last = 1;
	Guess(last);
	while(l < r) {
		int mid = (l+r) >> 1;
		int x = (last == l) ? r : l;
		int val = Guess(x);
		if(val == 0)
			return mid;
		int y = (val == 1) ? x : last;
		if((l+r)%2 == 0) {
			if(y == l)
				r = mid-1;
			else
				l = mid+1;
		}
		else {
			if(y == l)
				r = mid;
			else
				l = mid+1;
		}
		last = x;
	}
	return l;
}
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