Submission #35166

#	Time	Username	Problem	Language	Result	Execution time	Memory
35166		cheater2k	Gap (APIO16_gap)	C++14	30 / 100	63 ms	5920 KiB

gap

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

const int N = 1e5 + 5;
int n;
long long a[N];

long long solve1() {
	long long s = 0, t = 1e18;
	long long mn, mx;
	for (int i = 1; i <= (n + 1) / 2; ++i) {
		if (s <= t) MinMax(s, t, &mn, &mx);
		a[i] = mn; a[n - i + 1] = mx;
		s = mn + 1, t = mx - 1;
	}
	long long ans = 0;
	for (int i = 2; i <= n; ++i) ans = max(ans, a[i] - a[i - 1]);
	return ans;
}

long long solve2() {
	long long s = 0, t = 1e18;
	long long mn, mx;
	long long gap = (t - s + n - 2) / (n - 1);
	int sz = 0;
	for (long long i = s; i <= t; i += gap + 1) {
		MinMax(i, i + gap, &mn, &mx);
		a[++sz] = mn;
		a[++sz] = mx;
	}
	long long ans = 0;
	for (int i = 2; i <= sz; ++i) ans = max(ans, a[i] - a[i - 1]);
	return ans;
}

long long findGap(int T, int _N) {
	n = _N;
	if (T == 1) return solve1();
	else return solve2();
}

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