Submission #944915

#	Time	Username	Problem	Language	Result	Execution time	Memory
944915		Tuanlinh123	Chameleon's Love (JOI20_chameleon)	C++17	40 / 100	16 ms	4412 KiB

chameleon

#include "chameleon.h"
#include<bits/stdc++.h>
#define ll int
#define pll pair<ll, ll>
#define pb push_back
#define mp make_pair
#define fi first
#define se second
#define ld long double
#define sz(a) ((ll)(a).size())
using namespace std;

void Solve(ll n) 
{
    vector <ll> love(n*2+1, 0), loved(n*2+1, 0), res(n*2+1, 0);
    vector <vector <ll>> ans(n*2+1, vector <ll> (n*2+1, 0)), sus(n*2+1);
    for (ll i=1; i<=n*2; i++)
        for (ll j=i+1; j<=n*2; j++)
        {
            ans[i][j]=ans[j][i]=Query(vector <ll>{i, j});
            if (ans[i][j]==1) sus[i].pb(j), sus[j].pb(i);
        }
    for (ll i=1; i<=n*2; i++)
    {
        if (sz(sus[i])==1)
        {
            res[i]=sus[i][0], res[sus[i][0]]=i;
            continue;
        }
        assert(sz(sus[i])==3);
        for (ll j=0; j<3; j++)
            if (Query(vector <ll>{i, sus[i][j], sus[i][(j+1)%3]})==1)
                love[i]=sus[i][(j+2)%3], loved[sus[i][(j+2)%3]]=i;
    }
    for (ll i=1; i<=n*2; i++)
    {
        if (sz(sus[i])==1) continue;
        for (ll j:sus[i])
            if (j!=love[i] && j!=loved[i])
                res[i]=j, res[j]=i;
    }
    for (ll i=1; i<=n*2; i++)
    {
        if (!res[i]) continue;
        Answer(i, res[i]), res[i]=res[res[i]]=0;
    }
}

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