Submission #650244

#	Time	Username	Problem	Language	Result	Execution time	Memory
650244		ojoConmigo	The Big Prize (IOI17_prize)	C++17	20 / 100	1 ms	336 KiB

prize

#include "prize.h"

int find_best(int n) {
	/*
	for(int i = 0; i < n; i++) {
		std::vector<int> res = ask(i);
		if(res[0] + res[1] == 0)
			return i;
	}
	*/
	//Subtask 1
	std::vector<int> res;
	int lo = 0, hi = n-1,ans = -1;
	while(lo <= hi){
		int mid = (lo+hi)/2;
		res = ask(mid);
		if(res[0] + res[1] == 0){
			return mid;
		}else if(res[0]){
			hi = mid-1;
		}else{
			lo = mid+1;
		}
	}
	return 0;
}

Compilation message (stderr)

prize.cpp: In function 'int find_best(int)':
prize.cpp:13:23: warning: unused variable 'ans' [-Wunused-variable]
   13 |  int lo = 0, hi = n-1,ans = -1;
      |                       ^~~

• Subtask 1: 20 / 20
• Subtask 2: 0 / 80