Submission #47659

#	Time	Username	Problem	Language	Result	Execution time	Memory
47659		E869120	Gap (APIO16_gap)	C++14	50.22 / 100	235 ms	2336 KiB

gap

#include "gap.h"
#include <algorithm>
#include <iostream>
using namespace std;

long long a[100009]; int res = 0;

void saiki(long long L, long long R) {
	if (L >= R) return;
	long long s, t;
	MinMax(L, R - 1, &s, &t);
	if (s == -1) return;
	if (s == t) { res++; a[res] = s; return; }

	t++;
	long long B[31], LL = t - s, V = 15;
	for (int i = 0; i <= V; i++) {
		long double E = 1.0L*LL*i / (1.0L*V);
		B[i] = (long long)(1.0L*E);
	}
	B[V] = LL;
	for (int i = 0; i < V; i++) saiki(s + B[i], s + B[i + 1]);
}

long long findGap(int T, int N)
{
	if (T == 1) {
		long long L = 0, R = 1000000000000000000LL, s, t, cnt = 0;

		while (cnt < (N + 1) / 2) {
			MinMax(L, R, &s, &t);
			L = s; R = t;
			if (L != -1) { a[cnt + 1] = L; a[N - cnt] = R; }
			cnt++; L++; R--;
		}
		long long maxn = 0;
		for (int i = 1; i <= N - 1; i++) maxn = max(maxn, a[i + 1] - a[i]);
		return maxn;
	}
	if (T == 2) {
		saiki(0LL, 1000000000000000001LL);
		long long maxn = 0;
		for (int i = 1; i <= N - 1; i++) maxn = max(maxn, a[i + 1] - a[i]);
		return maxn;
	}
	return 0;
}

• Subtask 1: 30 / 30
• Subtask 2: 20.2222758485 / 70