Submission #429093

#	Time	Username	Problem	Language	Result	Execution time	Memory
429093		keko37	The Collection Game (BOI21_swaps)	C++14	100 / 100	8 ms	540 KiB

swaps

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

using namespace std;

typedef pair <int, int> pi;

const int MAXN = 505;

int n, p[MAXN];
vector <pi> v;

void upd () {
	for (auto pp : v) schedule(p[pp.first], p[pp.second]);
	vector <int> ans = visit();
	for (int i = 0; i < ans.size(); i++) {
		if (ans[i] == 0) swap(p[v[i].first], p[v[i].second]);
	}
}

void solve (int N, int V) {
	n = N;
	for (int i = 0; i < n; i++) p[i] = i + 1;
	for (int i = 0; i < 9; i++) {
		v.clear();
		for (int pos = 0; pos < n; pos++) {
			int par = pos ^ ((1 << (i + 1)) - 1);
			if (par < pos) v.push_back({par, pos});
		}
		upd();
		for (int j = i - 1; j >= 0; j--) {
			v.clear();
			for (int pos = 0; pos < n; pos++) {
				int par = pos ^ (1 << j);
				if (par < pos) v.push_back({par, pos});
			}
			upd();
		}
	}
	vector <int> sol;
	for (int i = 0; i < n; i++) sol.push_back(p[i]);
	answer(sol);
}

Compilation message (stderr)

swaps.cpp: In function 'void upd()':
swaps.cpp:16:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   16 |  for (int i = 0; i < ans.size(); i++) {
      |                  ~~^~~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 10 / 10
• Subtask 3: 3 / 3
• Subtask 4: 2 / 2
• Subtask 5: 9 / 9
• Subtask 6: 6 / 6
• Subtask 7: 9 / 9
• Subtask 8: 6 / 6
• Subtask 9: 21 / 21
• Subtask 10: 14 / 14
• Subtask 11: 9 / 9
• Subtask 12: 6 / 6