제출 #59239

#제출 시각아이디문제언어결과실행 시간메모리
59239TAMREFHotter Colder (IOI10_hottercolder)C++11
50 / 100
806 ms8288 KiB
#include "grader.h"
#include <bits/stdc++.h>
using namespace std;

int HC(int N){
    int b[2] = {1,N};
    Guess(b[1]);
    for(int w = 0, r; b[0] < b[1]; w ^= 1){
        r = Guess(b[w]);
        //printf("N = %d, [%d, %d], res = %d\n",N,b[w],b[!w],r);
        if(!r) return (b[0] + b[1]) / 2;
        if(r == -1){
            if(b[1] - b[0] == 1) return b[!w];
            Guess(b[!w]);
            b[w] = (b[0] + b[1] + !w) / 2;
            w = !w;
        }
        else{
            if(b[1] - b[0] == 1) return b[w];
            b[!w] = (b[0] + b[1] + w) / 2;
        }
    }
    return b[0];
}
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