Submission #261431

#	Time	Username	Problem	Language	Result	Execution time	Memory
261431		srvlt	Gap (APIO16_gap)	C++14	0 / 100	85 ms	1260 KiB

gap

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define ld long double
#define pb push_back
#define all(x) begin(x), end(x)
#define SZ(x) (int)(x).size()
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
#include "gap.h"

ll findGap(int T, int N) {
	ll MAX = 1e18, mn = 0, mx = 0;
	MinMax(0ll, MAX, & mn, & mx);
	if (T == 1) {
		ll l = mn, r = mx;
		ll ans = 1;
		while (true) {
			if (l + 1 > r - 1) break;
			MinMax(l + 1, r - 1, & mn, & mx);
			if (mn == -1) break;
			ans = max(ans, mn - l);
			ans = max(ans, r - mx);
			l = mn, r = mx;
		}
		ans = max(ans, r - l);
		return ans;
	}
	ll step = (mx - mn) / (N - 1), v = mn, f = mx;
	ll ans = 1;
	while (v < f) {
		MinMax(v + 1, v + step, & mn, & mx);
		if (mn == -1)
			step *= 2;
		else {
			ans = max(ans, mn - v);
			v = mx;
			if (step > (mx - mn) / (N - 1))
				step /= 2;
		}
	}
	return ans;
}

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