Submission #1311538

#	Time	Username	Problem	Language	Result	Execution time	Memory
1311538		madamadam3	Gap (APIO16_gap)	C++20	78.54 / 100	79 ms	3232 KiB

gap

#include "gap.h"
#include <bits/stdc++.h>

using namespace std;
typedef long long ll;

ll findGap(int T, int N) {
	if (T == 1) {
		vector<ll> a;
		ll s = 0, t = 1e18+1, mn = 0, mx = 0;
		for (int i = 0; i < (N+1)/2; i++) {
			MinMax(s, t, &mn, &mx);
			if (mn != -1) a.push_back(mn);
			if (mx != -1 && mx != mn) a.push_back(mx);
			s = mn+1, t = mx-1;
		}

		sort(a.begin(), a.end());

		ll ans = -1;
		for (int i = 0; i < N-1; i++) ans = max(ans, a[i+1] - a[i]);
		return ans;
	} else {
		ll s = 0, t = 1e18+1, mn = 0, mx = 0;
		MinMax(s, t, &mn, &mx);

		ll density = (mx - mn + N) / N;
		ll ans = density, curs = mn, tmx = mx;
		// cout << "density: " << density << "\n";

		while (curs < tmx) {
			s = curs+1, t = curs;
			mn = -1;

			while (mn == -1) {
				t += density;
				MinMax(s, t, &mn, &mx);
			}

			ans = max(ans, mn - curs);
			curs = mx;
		}

		return ans;
	}
	return 0;
}

• Subtask 1: 30 / 30
• Subtask 2: 48.5412 / 70