Submission #299510

#	Time	Username	Problem	Language	Result	Execution time	Memory
299510		kevlee	The Big Prize (IOI17_prize)	C++17	20 / 100	1 ms	384 KiB

prize

#include "prize.h"
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define mod 1000000007
#define h1 7897897897897897
#define h2 7897466719774591
#define b1 98762051
#define b2 98765431
#define inf 1000000000
#define pi 3.1415926535897932384626
#define LMAX 9223372036854775807
#define ll long long
#define fi first
#define se second
#define pii pair<int, int>
#define pll pair<ll, ll>
#define vi vector<int>
#define vl vector<ll>
#define vp vector<pii>
#define SET(a, b) memset(a, b, sizeof(a))
#define all(x) (x).begin(), (x).end()
#define FOR(i, a, b) for (int i = (a); i <= (b); i++)
#define FORD(i, a, b) for (int i = (a); i >= (b); i--)

int find_best(int n) {
  int l = 0, r = n-1, ans = -1;
  vi res;
  while (l <= r) {
    int mid = (l + r) >> 1;
    res = ask(mid);
    if (res[0] + res[1] == 0) return mid;
    if (res[0]) r = mid - 1;
    else l = mid + 1;
  }
	return 0;
}

Compilation message (stderr)

prize.cpp: In function 'int find_best(int)':
prize.cpp:27:23: warning: unused variable 'ans' [-Wunused-variable]
   27 |   int l = 0, r = n-1, ans = -1;
      |                       ^~~

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