Submission #23463

#	Time	Username	Problem	Language	Result	Execution time	Memory
23463		ztrong	Gap (APIO16_gap)	C++14	100 / 100	66 ms	6516 KiB

gap

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

using namespace std;

#define FOR(i, a, b) for (int i = a, _b = b; i <= _b; ++i)
#define FORD(i, a, b) for (int i = a, _b = b; i >= _b; --i)
#define REP(i, a) for (int i = 0, _a = a; i < _a; ++i)
#define llint long long
#define sz(x) (x.size())
#define LL(x) (x * 2)
#define RR(x) (x * 2 + 1)
#define fi first
#define se second
#define db(x) cout << #x << " = " << x << endl;
#define BIT(x, i) ((x >> i) & 1)
#define MASK(i) (1ll << i)
#define times clock() * 1.0 / CLOCKS_PER_SEC

void openFile() {
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
}

const int maxN = 1e5 + 5;
const int maxM = 1e6 + 5;
const llint INF = 1e18 + 100;

vector<llint> lef, rig;
llint findGap(int T, int N) {
	if (T == 1) {
		llint l = -1, r = INF;
		llint nl = 0, nr = 0;
		llint res = 0;
		FOR(i, 1, (N + 1) / 2) {
			MinMax(l + 1, r - 1, &nl, &nr);
			lef.push_back(nl);
			rig.push_back(nr);
			l = nl; r = nr;
		}
		FOR(i, 1, lef.size() - 1) {
			res = max(res, lef[i] - lef[i - 1]);
		}
		FOR(i, 1, rig.size() - 1) {
			res = max(res, rig[i - 1] - rig[i]);
		}
		res = max(res, rig.back() - lef.back());
		return res;
	}
	else {
		llint l, r;
		MinMax(-1, INF, &l, &r);
		if (N == 2) {
			return r - l;
		}
		llint lower = (r - l) / (N - 1);
		llint nl, nr;
		do {
			llint x = 0;
			nl = nr = -1;
			while (nl == -1) {
				++x;
				MinMax(l + 1, l + lower * x, &nl, &nr);
			}

			lower = max(lower, nl - l);
			l = nr;
		} while (l != r);
		return lower;
	}
}

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