Submission #119547

#	Time	Username	Problem	Language	Result	Execution time	Memory
119547		Plurm	Hotter Colder (IOI10_hottercolder)	C++11	52 / 100	764 ms	8276 KiB

hottercolder

#include "grader.h"
int HC(int N){
    int lo = 1;
    int hi = N;
    while(hi - lo + 1 > 4){
        Guess(lo);
        int r = Guess(hi);
        if(r > 0){
            lo = (lo + hi)/2 + 1;
        }else{
            hi = (lo + hi)/2;
        }
    }
    int last = -1;
    for(int i = lo; i <= hi; i += 2){
        int cur = Guess(i);
        if(last == -1){
            last = cur;
            continue;
        }
        if(cur == -1) return i-2;
        if(cur == 0) return i-1;
        last = cur;
    }
    if((hi - lo) % 2 == 1){
        int cur = Guess(hi);
        if(cur == 1) return hi;
        else return hi-1;
    }
    return hi;
}

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