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Submission #423727

# Submission time Handle Problem Language Result Execution time Memory
423727 2021-06-11T11:59:46 Z milleniumEeee Chameleon's Love (JOI20_chameleon) C++17
0 / 100
 23 ms 352 KB 
#ifndef EVAL
#include "grader.cpp"
#endif
#include "chameleon.h"
#include <bits/stdc++.h>
#define fr first
#define sc second
#define pii pair<int, int>
#define pb push_back
#define szof(s) (int)s.size()
#define all(s) s.begin(), s.end()
#define ll long long
using namespace std;

const int MAXN = 505;

// Query(p) | p is vector<int>
// Answer(a, b)

int n;

bool found[MAXN * 2];

vector <int> g[MAXN * 2];
vector <int> G[MAXN * 2];

bool exist(vector <int> &vec, int x) {
	for (int el : vec) {
		if (el == x) {
			return true;
		}
	}
	return false;
}

void Solve(int N) {
	n = N;
	for (int i = 1; i <= n * 2; i++) {
		if (found[i]) {
			continue;
		}
		vector <int> cand;
		for (int j = 1; j <= n * 2; j++) {
			if (i != j) {
				vector <int> ask = {i, j};
				if (Query(ask) == 1) {
					cand.pb(j);
				}
			}
		}
		if (szof(cand) == 1) {
			Answer(i, cand[0]);
			found[i] = found[cand[0]] = 1;
		}
		else {
			assert(szof(cand) == 3);
			for (int to : cand) {
				g[i].pb(to);
			}
		}
	}
	for (int i = 1; i <= n * 2; i++) {
		for (int j = i + 1; j <= n * 2; j++) {
			if (exist(g[i], j) && exist(g[j], i)) {
				G[i].pb(j);
				G[j].pb(i);
			}
		}	
	}
	for (int i = 1; i <= n * 2; i++) {
		if (!found[i]) {
			set <int> cand;
			assert(szof(g[i]) == 3);
			for (int el : g[i]) {
				cand.insert(el);
			}
			for (int el : G[i]) {
				cand.erase(el);
			}
			int need = *cand.begin();
			found[i] = found[need] = 1;
			Answer(i, need);
		}
	}
}

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 328 KB Output is correct
2 Correct 0 ms 328 KB Output is correct
3 Incorrect 23 ms 352 KB Wrong Answer [3]
4 Halted 0 ms 0 KB -

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 328 KB Output is correct
2 Incorrect 0 ms 328 KB Wrong Answer [4]
3 Halted 0 ms 0 KB -

Subtask #3
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 328 KB Output is correct
2 Incorrect 0 ms 328 KB Wrong Answer [4]
3 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 328 KB Output is correct
2 Incorrect 0 ms 328 KB Wrong Answer [4]
3 Halted 0 ms 0 KB -

Subtask #5
0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 328 KB Output is correct
2 Correct 0 ms 328 KB Output is correct
3 Incorrect 23 ms 352 KB Wrong Answer [3]
4 Halted 0 ms 0 KB -