oj.uz

Submission #704337

# Submission time Handle Problem Language Result Execution time Memory
704337 2023-03-02T03:55:49 Z Hiennoob123 Park (JOI17_park) C++14
20 / 100
 2000 ms 576 KB 
#include "park.h"
#include <bits/stdc++.h>
#define ll int
#define ld long double
#define pll pair<ll,ll>
#define pb push_back
#define mp make_pair
#define fi first
#define se second
using namespace std;
const ll maxn = 1405;
static int Place[1400];
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
ll random(ll l ,ll r)
{
    ll x = rng();
    return (abs(x)%(r-l+1)+l);
}
ll t, n;
vector<pll> Edge;
ll par[maxn];
ll find_par(ll v)
{
    if(v==par[v]) return v;
    else return par[v] = find_par(par[v]);
}
bool mid(ll a, ll b, ll c)
{
    if(a>c) swap(a, c);
    //cout << a << " " << b << " " << c << "\n";
    for(int i = 0; i< n; i++) Place[i] = 1;
    Place[b] = 0;
    return !Ask(a, c, Place);
}
bool adj(ll a, ll b)
{
    if(a>b) swap(a, b);
    //cout << a << " " << b << "\n";
    for(int i = 0; i< n; i++) Place[i] = 0;
    Place[a] = Place[b] = 1;
    return Ask(a, b, Place);
}
void Answ()
{
    for(auto u: Edge)
    {
        if(u.fi>u.se) swap(u.fi, u.se);
        //cout << u.fi << " " << u.se << "\n";
        Answer(u.fi, u.se);
    }
}
namespace task1
{
    void solve()
    {
        for(int i = 0; i< n; i++)
        {
            for(int j = i+1; j< n; j++)
            {
                if(adj(i, j)) Edge.push_back(mp(i, j));
            }
        }
        Answ();
    }
}
namespace task2
{
    void dfs(ll a, ll b, vector<ll> T)
    {
        if(T.size()==0)
        {
            Edge.push_back(mp(a, b));
            return;
        }
        vector<ll> A, B;
        ll x = T[random(0, T.size()-1)];
        for(auto u: T)
        {
            if(u==x) continue;
            if(mid(a, u, x)) A.push_back(u);
            else B.push_back(u);
        }
        dfs(a, x, A);
        dfs(b, x ,B);
    }
    void solve()
    {
        vector<ll> T;
        for(int i = 1; i< n-1; i++) T.push_back(i);
        dfs(0, n-1, T);
        Answ();
    }
}
namespace task3
{
    vector<ll> T[maxn];
    bool chk[maxn];
    ll Last[maxn] = {};
    void dfs(ll a, ll b)
    {
        //cout << a << " " << b << " " << Last[b] << "\n";
        //cout << T[a].size() << "\n";
        if(Last[b]==a) return;
        bool done = 0;
        for(auto u: T[a])
        {
            if(mid(0, u, b))
            {
                dfs(u, b);
                done = 1;
                break;
            }
        }
        if(!done)
        {
            Last[b] = a;
            if(adj(a, b))
            {
                chk[b] = 1;
                T[a].push_back(b);
                Edge.push_back(mp(a, b));
                return;
            }
            return;
        }

    }
    void solve()
    {
        queue<ll> q;
        for(int i = 0; i< n; i++) Last[i] = -1;
        for(int i = 1; i< n; i++) q.push(i);
        int ti = 0;
        while(!q.empty())
        {
            ti++;
            //sif(ti>20) break;
            ll x = q.front();
            //cout << x << "-\n";
            q.pop();
            dfs(max(0,Last[x]), x);
            //cout << x << " " << chk[x] << "-\n";
            if(chk[x]) continue;
            q.push(x);
        }
        Answ();
    }
}
void Detect(int xaa, int xa) {
    t = xaa; n = xa;
    if(t==1) task1::solve();
    else if(t==2) task2::solve();
    else if(t==3) task3::solve();
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 5 ms 340 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 6 ms 380 KB Output is correct
5 Correct 10 ms 380 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 177 ms 548 KB Output is correct
2 Correct 109 ms 576 KB Output is correct
3 Correct 105 ms 576 KB Output is correct
4 Correct 218 ms 552 KB Output is correct
5 Correct 212 ms 520 KB Output is correct

Subtask #3
0 / 27.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2073 ms 340 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 30.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 340 KB Wrong Answer[6]
2 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 340 KB Wrong Answer[6]
2 Halted 0 ms 0 KB -