Submission #814674

#	Time	Username	Problem	Language	Result	Execution time	Memory
814674		Dan4Life	The Big Prize (IOI17_prize)	C++17	20 / 100	82 ms	316 KiB

prize

#include "prize.h"
#include <bits/stdc++.h>
using namespace std;
#define pb push_back

int find_best(int n) {
	int pr = 0;
	for(int _ = 0; _ < 500; _++){
		int l = pr, r = n-1;
		while(l<r){
			int mid = (l+r)/2;
			auto a = ask(mid);
			if(a[0]+a[1]==0) return mid;
			if(a[0])r=mid-1;
			else l=mid+1;
		}
		auto a = ask(l);
		if(a[0]+a[1]==0) return l;
		pr = l+1;
	}
}

Compilation message (stderr)

prize.cpp: In function 'int find_best(int)':
prize.cpp:21:1: warning: control reaches end of non-void function [-Wreturn-type]
   21 | }
      | ^

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