Submission #423953

#	Time	Username	Problem	Language	Result	Execution time	Memory
423953		errorgorn	Chameleon's Love (JOI20_chameleon)	C++17	4 / 100	40 ms	348 KiB

chameleon

#include "chameleon.h"

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

#define ll long long
#define ii pair<ll,ll>
#define fi first
#define se second
#define endl '\n'

#define puf push_front
#define pof pop_front
#define pub push_back
#define pob pop_back

#define rep(x,s,e) for (auto x=s-(s>e);x!=e-(s>e);s<e?x++:x--)
#define all(x) (x).begin(),(x).end()
#define sz(x) (int) (x).size()

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

int n;

bool solved[1005];

void Solve(int N) {
	n=N;
	
	rep(x,0,n){
		vector<int> v;
		rep(y,1,2*n+1) if (!solved[y]) v.pub(y);
		
		while (sz(v)!=2){
			rep(x,0,sz(v)) swap(v[x],v[rng()%(x+1)]);
			
			vector<int> l,r;
			
			rep(x,0,sz(v)/2) l.pub(v[x]);
			rep(x,sz(v)/2,sz(v)) r.pub(v[x]);
			
			if (Query(l)!=sz(l)) v=l;
			else if (Query(r)!=sz(r)) v=r;
		}
		
		solved[v[0]]=true;
		solved[v[1]]=true;
		Answer(v[0],v[1]);
	}
	
}

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