Submission #106947

#	Time	Username	Problem	Language	Result	Execution time	Memory
106947		maksim_gaponov	Gap (APIO16_gap)	C++14	30 / 100	105 ms	1400 KiB

gap

#include "gap.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define int ll

const int MAX = 1e18;

int findGap(signed T, signed N) {
	// cout << T << ' ' << N << endl;
	int l = 0;
	int r = MAX;
	int CNT = 0;
	MinMax(l, r, &l, &r);
	++CNT;
	int ans = 0;
	int step = 1;
	while (r != l) {
		if (2 * step == N || r - l == 1) {
			ans = max(ans, r - l);
			break;
		}
		int nl;
		int nr;
		MinMax(l + 1, r - 1, &nl, &nr);
		++CNT;
		if (nl != -1) {
			ans = max(ans, r - nr);
			ans = max(ans, nl - l);
		} else {
			ans = max(ans, r - l);
		}
		step++;
		r = nr;
		l = nl;
		// cout << r << ' ';
	}
	// cout << endl;
	// assert(2 * CNT <= N + 1);
	return ans;
}

• Subtask 1: 30 / 30
• Subtask 2: 0 / 70