Submission #595553

#	Time	Username	Problem	Language	Result	Execution time	Memory
595553		Hacv16	Art Collections (BOI22_art)	C++17	35 / 100	218 ms	63304 KiB

art

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

typedef long long ll;
typedef pair<int, int> pii;

const int MAX = 4010;
const int INF = 0x3f3f3f3f;
const int MOD = 1e9 + 7;

#define pb push_back
#define sz(x) (int) x.size()
#define fr first
#define sc second
#define mp make_pair
#define all(x) x.begin(), x.end()
#define dbg(x) cout << #x << ": " << "[ " << x << " ]\n"

int inversions = 0, queries = 0,  n, memo[MAX][MAX];

bool cmp(int a, int b){
	if(queries == 4000){
		srand (time(NULL));
		int t = rand() % 2;
		return t;
	}
	
	int cur = INF;
	
	if(memo[min(a, b)][max(a, b)] != -1){
		cur = memo[min(a, b)][max(a, b)];
	}else{
		vector<int> aux(n);
		iota(all(aux), 1);
	
		for(int i = 0; i < n; i++){		
			if(aux[i] == a) aux[i] = b;
			else if(aux[i] == b) aux[i] = a;
		}
	
		cur = publish(aux); queries++;
		memo[min(a, b)][max(a, b)] = cur;
	}
	
	if(a > b) return cur < inversions;
	return cur > inversions;
}

void solve(int N){
	n = N;
	
	vector<int> v(n);
	iota(all(v), 1);
	
	memset(memo, -1, sizeof(memo));
	
	inversions = publish(v);
	
	sort(all(v), cmp);
	
	answer(v);
}

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: 0 / 15
• Subtask 5: 0 / 20
• Subtask 6: 0 / 30