Submission #804694

#	Time	Username	Problem	Language	Result	Execution time	Memory
804694		Ellinor	The Big Prize (IOI17_prize)	C++14	20 / 100	1 ms	344 KiB

prize

#include <bits/stdc++.h>
using namespace std;

#define rep(i,a,b) for (int i = (a); i < (b); i++)
#define pb push_back
typedef long long ll;
typedef pair<int, int> pii;

#include "prize.h"

int find_best(int n) 
{
    int ans;
    int low = 0, high = n - 1;
    int mid;
    while (low <= high)
    {
        mid = (low + high) / 2;

        std::vector<int> res = ask(mid);
        if(res[0] + res[1] == 0) ans = mid;

        if (res[0] > res[1]) high = mid - 1;
        else low = mid + 1;
    }

	return ans;
}

Compilation message (stderr)

prize.cpp: In function 'int find_best(int)':
prize.cpp:27:9: warning: 'ans' may be used uninitialized in this function [-Wmaybe-uninitialized]
   27 |  return ans;
      |         ^~~

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