Submission #1147505

#	Time	Username	Problem	Language	Result	Execution time	Memory
1147505		iah	The Big Prize (IOI17_prize)	C++20	20 / 100	0 ms	408 KiB

prize

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

#define ll long long
#define pii pair < int , int >
#define fi first
#define se second
#define FOR(i, a, b) for (int i = (a), _b = (b); i <= _b; i ++)
#define FORD(i, a, b) for (int i = (a), _b = (b); i >= _b; i --)
#define REP(i, n) for (int i = 0, _n = (n); i < _n; i ++)
#define bit(x, i) (((x) >> (i)) & 1ll)
#define mask(x) (1ll << (x))
#define mem(f, x) memset(f, x, sizeof(f))
#define sz(x) (int32_t) (x.size())

int find_best(int n) {
	int l = 0, r = n - 1;
	while (l <= r) {
    int mid = (l + r) >> 1;
    auto tmp = ask(mid);

    if (tmp[0]) {
      r = mid - 1;
    }
    else if (tmp[1]) {
      l = mid + 1;
    }
    else {
      return mid;
    }
	}
	return 0;
}

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