Submission #1084461

#	Time	Username	Problem	Language	Result	Execution time	Memory
1084461		MMihalev	Gap (APIO16_gap)	C++17	30 / 100	39 ms	1980 KiB

gap

#include "gap.h"

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;

const ll MAXN = 1e18;

ll a[100000], j = 0;

ll findGap(int T, int N) {
	if (T >= 1) {
		ll l = 1, r = MAXN;
		ll mn, mx;
		vector<ll> v;
		for (ll i = 0; i < (N + 1) / 2; i++) {
			MinMax(l, r, &mn, &mx);
			a[j++] = mn;
			a[j++] = mx;
			l = mn + 1, r = mx - 1;
		}
		sort(a, a + N);
		ll ans = 0;
		for (ll i = 0; i < N - 1; i++) ans = max(ans, a[i + 1] - a[i]);
		return ans;
	} else {
		ll mn, mx;
		MinMax(1, MAXN, &mn, &mx);
		ll step = (mx - mn + N - 2) / (N - 1);
		ll ans = step, x, y, l = mn, i;
		for (i = mn; i + step < mx; i += step + 1) {
			MinMax(i, i + step, &x, &y);
			if (x != -1) {
				ans = max(ans, x - l);
				l = y;
			}
		}
		MinMax(i, mx, &x, &y);
		if (x != -1) ans = max(ans, x - l);
		return ans;
	}
}

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