Submission #464189

#	Time	Username	Problem	Language	Result	Execution time	Memory
464189		koioi.org-dennisstar	Chameleon's Love (JOI20_chameleon)	C++17	40 / 100	24 ms	328 KiB

chameleon

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

using namespace std;

void Solve(int n) {
	vector<vector<int>> adj(2*n+1);
	for (int i=1; i<2*n; i++) for (int j=i+1; j<=2*n; j++) {
		vector<int> v(2);
		v[0]=i, v[1]=j;
		if (Query(v)==1) adj[i].emplace_back(j), adj[j].emplace_back(i);
	}
	auto chk = [&](int x, int y) {
		if (adj[x].size()==1||adj[y].size()==1) return true;
		int f1=0, f2=0;
		vector<int> v(3);
		v[0]=x, v[1]=y;
		for (auto &i:adj[x]) if (i!=y) {
			v[2]=i;
			if (Query(v)==1) { f1=1; break; }
		}
		for (auto &i:adj[y]) if (i!=x) {
			v[2]=i;
			if (Query(v)==1) { f2=1; break; }
		}
		return f1&&f2;
	};
	for (int i=1; i<=2*n; i++) for (auto &j:adj[i]) if (chk(i, j)) {
		Answer(i, j);
		adj[j].clear();
		break;
	}
}

• Subtask 1: 0 / 4
• Subtask 2: 20 / 20
• Subtask 3: 20 / 20
• Subtask 4: 0 / 20
• Subtask 5: 0 / 36