Submission #573629

#	Time	Username	Problem	Language	Result	Execution time	Memory
573629		pavement	Art Collections (BOI22_art)	C++17	100 / 100	1716 ms	580 KiB

art

#include "art.h"
#include <bits/stdc++.h>
using namespace std;

#define pb push_back

void solve(int N) {
	int _ord[2 * N + 1], *ord = _ord + N;
	memset(_ord, -1, sizeof _ord);
	ord[0] = 1;
	vector<int> order, out;
	for (int i = 1; i <= N; i++) order.pb(i);
	int E = publish(order);
	for (int i = 2, pos = 0; i <= N; i++) {
		int tmp = -1;
		if (i & 1) {
			swap(order[pos], order[(i - 1) / 2]);
			tmp = order[pos];
			pos = (i - 1) / 2;
		} else {
			swap(order[pos], order[order.size() - i / 2]);
			tmp = order[pos];
			pos = order.size() - i / 2;
		}
		int E2 = publish(order), D = E2 - E;
		if (i & 1) D = -D;
		int dist = (D > 0 ? (D + 1) / 2 : -(-D + 1) / 2);
		if (dist > 0) {
			int pos = 0;
			while (dist) {
				if (ord[pos] == -1) dist--;
				pos++;
			}
			ord[pos - 1] = tmp;
		} else {
			int pos = 0;
			while (dist) {
				if (ord[pos] == -1) dist++;
				pos--;
			}
			ord[pos + 1] = tmp;
		}
		E = E2;
	}
	for (int i = -N; i <= N; i++)
		if (ord[i] != -1) out.pb(ord[i]);
	answer(out);
}

Compilation message (stderr)

interface.cpp: In function 'int publish(std::vector<int>)':
interface.cpp:20:17: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   20 |     if(v.size() != N) {
      |        ~~~~~~~~~^~~~
interface.cpp: In function 'void answer(std::vector<int>)':
interface.cpp:36:17: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   36 |     if(v.size() != N) {
      |        ~~~~~~~~~^~~~

• Subtask 1: 5 / 5
• Subtask 2: 15 / 15
• Subtask 3: 15 / 15
• Subtask 4: 15 / 15
• Subtask 5: 20 / 20
• Subtask 6: 30 / 30