Submission #967736

#	Time	Username	Problem	Language	Result	Execution time	Memory
967736		TAhmed33	Gap (APIO16_gap)	C++98	0 / 100	46 ms	3088 KiB

gap

#include <bits/stdc++.h>
#include "gap.h"
using namespace std;
typedef long long ll;
const ll inf = 1e18;
vector <ll> a;
ll ans = 0;
pair <ll, ll> ask (ll l, ll r) {
	ll mn = l, mx = r;
	MinMax(l, r, &mn, &mx);
	return {mn, mx};
}
void recurse (ll l, ll r) {
	if (l == r) {
		return;
	}
	ll mid = (l + r) / 2;
	auto g = ask(l + 1, mid);
	if (g.first != -1) recurse(g.first, g.second);
	auto h = ask(mid + 1, r - 1);
	if (h.first != -1) recurse(h.first, h.second);
	if (g.second != -1 && h.first != -1) ans = max(ans, h.first - g.second);
	if (g.first != -1) ans = max(ans, g.first - l);
	if (h.second != -1) ans = max(ans, r - h.second);
	if (g.first == -1 && h.first == -1) ans = max(ans, r - l);
}
ll findGap (int t, int n) {
	a.clear(); ans = 0;
	auto g = ask(0, inf);
	recurse(g.first, g.second);
	return ans;
}

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