Submission #962033

#	Time	Username	Problem	Language	Result	Execution time	Memory
962033		GrindMachine	Chameleon's Love (JOI20_chameleon)	C++17	0 / 100	24 ms	784 KiB

chameleon

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>

using namespace std;
using namespace __gnu_pbds;

template<typename T> using Tree = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
typedef long long int ll;
typedef long double ld;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;

#define fastio ios_base::sync_with_stdio(false); cin.tie(NULL)
#define pb push_back
#define endl '\n'
#define sz(a) (int)a.size()
#define setbits(x) __builtin_popcountll(x)
#define ff first
#define ss second
#define conts continue
#define ceil2(x,y) ((x+y-1)/(y))
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
#define yes cout << "Yes" << endl
#define no cout << "No" << endl

#define rep(i,n) for(int i = 0; i < n; ++i)
#define rep1(i,n) for(int i = 1; i <= n; ++i)
#define rev(i,s,e) for(int i = s; i >= e; --i)
#define trav(i,a) for(auto &i : a)

template<typename T>
void amin(T &a, T b) {
    a = min(a,b);
}

template<typename T>
void amax(T &a, T b) {
    a = max(a,b);
}

#ifdef LOCAL
#include "debug.h"
#else
#define debug(x) 42
#endif

/*



*/

const int MOD = 1e9 + 7;
const int N = 1e3 + 5;
const int inf1 = int(1e9) + 5;
const ll inf2 = ll(1e18) + 5;

#include "chameleon.h"

namespace {

    int variable_example = 1;

}  // namespace

vector<int> cands[N];
int Q = 0;

void go(vector<int> a, vector<int> b){
    if(sz(a) == 1){
        int i = a[0];
        trav(j,b){
            cands[i].pb(j), cands[j].pb(i);
        }

        return;
    }

    vector<int> la,ra,lb,rb;
    rep(i,sz(a)){
        if(i < sz(a)/2){
            la.pb(a[i]);
        }
        else{
            ra.pb(a[i]);
        }
    }

    trav(j,b){
        Q++;
        assert(Q <= 20000);

        la.pb(j);
        int res = Query(la);
        if(res != sz(la)) lb.pb(j);
        else{
            rb.pb(j);
            la.pop_back();
            conts;
        }

        la.pop_back();

        Q++;
        assert(Q <= 20000);

        ra.pb(j);
        res = Query(ra);
        if(res != sz(ra)) rb.pb(j);
        ra.pop_back();
    }

    go(la,lb);
    go(ra,rb);
}

void Solve(int n) {
    // std::vector<int> p(3);
    // p[0] = 1;
    // p[1] = 2;
    // p[2] = 3;
    // variable_example = Query(p);
    // for (int i = 0; i < N; ++i) {
    //     Answer(i * 2 + 1, i * 2 + 2);
    // }

    vector<int> v1,v2;
    rep1(i,n) v1.pb(i), v2.pb(i+n);
    go(v1,v2);
    assert(Q <= 15000);
    
    vector<pii> ans;
    vector<bool> done(2*n+5);

    rep1(i,2*n){
        if(done[i]) conts;

        /*

        vector<int> curr_cands;

        rep1(j,2*n){
            if(j == i) conts;                
            int res = Query({i,j});
            if(res == 1){
                curr_cands.pb(j);
            }
        }
        
        cands[i] = curr_cands;

        */

        auto curr_cands = cands[i];
        assert(sz(curr_cands) == 1 or sz(curr_cands) == 3);

        if(sz(curr_cands) == 1){
            ans.pb({i,curr_cands[0]});
            done[i] = done[curr_cands[0]] = 1;
        }
    }

    rep1(i,2*n){
        if(done[i]) conts;
        int x = cands[i].back();

        rep(ind,sz(cands[i])-1){
            int j = cands[i][ind];
            if(done[j]) conts;

            int cnt = 0;

            trav(k,cands[i]){
                if(k == i or k == j) conts;
                int res = Query({i,j,k});
                if(res == 1){
                    cnt++;
                }
            }

            if(cnt == 0) conts;

            trav(k,cands[j]){
                if(k == i or k == j) conts;
                int res = Query({i,j,k});
                if(res == 1){
                    cnt++;
                }
            }

            if(cnt == 2){
                x = j;
                break;
            }
        }

        assert(x != -1);

        ans.pb({i,x});
        done[i] = done[x] = 1;
    }

    for(auto [i,j] : ans){
        Answer(i,j);
    }
}

Compilation message (stderr)

chameleon.cpp:64:9: warning: '{anonymous}::variable_example' defined but not used [-Wunused-variable]
   64 |     int variable_example = 1;
      |         ^~~~~~~~~~~~~~~~

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