Submission #47650

#	Time	Username	Problem	Language	Result	Execution time	Memory
47650		E869120	Gap (APIO16_gap)	C++14	30 / 100	2066 ms	2324 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) {
	long long s, t;
	if (L >= R) {
		cout << "!" << endl;
	}
	MinMax(L, R - 1, &s, &t);
	if (s == -1) return;
	if (s == t) { res++; a[res] = s; return; }

	t++; long long T = 10;
	if (t - s <= T) {
		for (int i = s; i < t; i++) {
			saiki(i, i + 1);
		}
	}
	else if (t - s <= 100000000000LL) {
		for (int i = 0; i < T; i++) {
			long long G1 = 1LL * (t - s)*i / T; G1 += s;
			long long G2 = 1LL * (t - s)*(i + 1) / T; G2 += s;
			saiki(G1, G2);
		}
	}
	else {
		long long Y = (t - s) / T; Y++;
		for (int i = 0; i < T; i++) {
			long long G1 = 1LL * i*Y; G1 += s;
			long long G2 = 1LL * (i + 1)*Y; G2 += s;
			if (G1 >= G2) continue;
			saiki(G1, G2);
		}
	}
}

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: 0 / 70