제출 #56118

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
56118		leejseo	Hotter Colder (IOI10_hottercolder)	C++98	0 / 100	902 ms	49840 KiB

hottercolder

#include "grader.h"

int HC(int N){
	int lo = 1, hi = N;
	while (lo < hi){
		if (hi == lo + 1){
			Guess(lo);
			if (Guess(hi) == 1) return hi;
			return lo;
		}
		int mid = (lo + hi) >> 1;		
		int left = Guess(lo);
		int middle = Guess(mid);
		int right = Guess(hi);
		if (middle == -1){
			hi = mid;
			continue;
		}
		if (middle == 0){
			return (lo+mid) >> 1;
		}
		//middle == 1
		if (right == 1){
			lo = mid;
			continue;
		}
		if (right == 0){
			return (lo+hi)>>1;
		}
		if (right == -1){
			lo = 1 + ((lo + mid) >> 1);
			hi = ((hi + mid) >> 1);
			continue;
		}
	}	
	return lo;
}

컴파일 시 표준 에러 (stderr) 메시지

hottercolder.cpp: In function 'int HC(int)':
hottercolder.cpp:12:7: warning: unused variable 'left' [-Wunused-variable]
   int left = Guess(lo);
       ^~~~

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