oj.uz

Submission #831515

# Submission time Handle Problem Language Result Execution time Memory
831515 2023-08-20T10:05:50 Z MadokaMagicaFan Library (JOI18_library) C++14
0 / 100
 35 ms 308 KB 
#include "bits/stdc++.h"
#include "library.h"
using namespace std;
#define pb push_back
#define sz(v) ((int)v.size())

mt19937 rng(time(NULL));

vector<int> ans, j;

bitset<1001> in;

int query(int s, vector<int> &z) {
	shuffle(z.begin(), z.end(), rng);
	if (sz(z) == 1) return z[0];
	if (sz(z) == 0) return -1;
	int l = 0;
	int r = sz(z) - 1;
	int c1, c2;


	while (l < r) {
		int m = (l+r)/2;
		fill(j.begin(), j.end(), 0);
		for (int i = l; i <= m; ++i)
			j[z[i]-1] = 1;
		c1 = Query(j);
		j[s-1] = 1;
		c2 = Query(j);
		if (c1 >= c2)
			r = m;
		else
			l = m+1;
	}

	if (l == sz(z) -1) {
		fill(j.begin(), j.end(), 0);
		j[s-1] = 1; j[z.back()-1] = 1;
		if (Query(j) != 1)
			return -1;
	}

	return z[l];
}

void remain(vector<int> &u, int n) {
	u.clear();
	for (int i = 1; i <= n; ++i)
		if (!in[i]) u.pb(i);
}

void Solve(int n) {
	int c = 1;
	j.assign(n, 0);
	vector<int> u;

	while (c != -1) {
		in[c] = 1;
		ans.pb(c);
		remain(u, n);
		c = query(c, u);
	}

	reverse(ans.begin(), ans.end());
	c = ans.back();
	ans.pop_back();
	while (c != -1) {
		in[c] = 1;
		ans.pb(c);
		remain(u, n);
		c = query(c, u);
	}

	Answer(ans);
}

Subtask #1
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 32 ms 208 KB # of queries: 2399
2 Correct 25 ms 208 KB # of queries: 2357
3 Correct 35 ms 208 KB # of queries: 2516
4 Correct 25 ms 208 KB # of queries: 2542
5 Correct 24 ms 208 KB # of queries: 2541
6 Correct 22 ms 208 KB # of queries: 2520
7 Correct 25 ms 208 KB # of queries: 2509
8 Correct 23 ms 208 KB # of queries: 2412
9 Correct 31 ms 208 KB # of queries: 2504
10 Correct 10 ms 308 KB # of queries: 1470
11 Correct 0 ms 208 KB # of queries: 0
12 Correct 0 ms 208 KB # of queries: 0
13 Incorrect 0 ms 208 KB Wrong Answer [8]
14 Halted 0 ms 0 KB -

Subtask #2
0 / 81.0

# Verdict Execution time Memory Grader output
1 Correct 32 ms 208 KB # of queries: 2399
2 Correct 25 ms 208 KB # of queries: 2357
3 Correct 35 ms 208 KB # of queries: 2516
4 Correct 25 ms 208 KB # of queries: 2542
5 Correct 24 ms 208 KB # of queries: 2541
6 Correct 22 ms 208 KB # of queries: 2520
7 Correct 25 ms 208 KB # of queries: 2509
8 Correct 23 ms 208 KB # of queries: 2412
9 Correct 31 ms 208 KB # of queries: 2504
10 Correct 10 ms 308 KB # of queries: 1470
11 Correct 0 ms 208 KB # of queries: 0
12 Correct 0 ms 208 KB # of queries: 0
13 Incorrect 0 ms 208 KB Wrong Answer [8]
14 Halted 0 ms 0 KB -