Submission #32039

#	Time	Username	Problem	Language	Result	Execution time	Memory
32039		imeimi2000	Gap (APIO16_gap)	C++14	100 / 100	83 ms	4236 KiB

gap

#include "gap.h"
#include <algorithm>

using namespace std;
typedef long long llong;

int n;
const llong m = 1e18;
llong divpro(llong s, llong t) {
	llong ret = 0;
	llong a, b;
	llong q = (t - s - 1) / n;
	llong r = (t - s - 1) - q * n;
	llong pree = s;
	for (llong i = 0, j = s; i < n; ++i) {
		llong dis = q + (i < r);
		MinMax(j + 1, j + dis, &a, &b);
		j += dis;
		if (a == -1) continue;
		ret = max(ret, a - pree);
		pree = b;
 	}
	return max(ret, t - pree);
}

long long findGap(int T, int N)
{
	n = N;
	llong s, t;
	MinMax(0, m, &s, &t);
	if (n == 2) return t - s;
	n -= 2;
	if (T == 1) {
		llong ret = 0;
		llong i = s, j = t;
		while (n > 0) {
			MinMax(i + 1, j - 1, &i, &j);
			n -= 2;
			ret = max(ret, max(t - j, i - s));
			s = i; t = j;
		}
		return ret;
	}
	else {
		return divpro(s, t);
	}
}

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