제출 #1144497

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1144497		kh0i	사육제 (CEOI14_carnival)	C++20	100 / 100	4 ms	436 KiB

carnival

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

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

using ll = long long;
using pii = pair<int, int>;

#define F first
#define S second
#define sz(x) (int)((x).size())
#define all(x) (x).begin(), (x).end()

mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
ll get_rand(ll l, ll r) {
    assert(l <= r);
    return uniform_int_distribution<ll> (l, r)(rng);
}

const int N = 153;

int n;
vector<int> uni;

namespace Interactor{
    void init(){
        cin >> n;
    }

    int ask(vector<int> x, int y){
        if(y)
            x.push_back(y);
        cout << sz(x);
        for(int i : x)
            cout << " " << i;
        cout << endl;
        int res;
        cin >> res;
        return res;
    }

    void answer(vector<int> x){
        cout << 0;
        assert(sz(x) == n);
        for(int i : x)
            cout << " " << i;
        cout << endl;
    }
}

void solve(){
    Interactor::init();
    int prev = 1;
    uni.push_back(1);
    for(int i = 2; i <= n; ++i){
        int cur = Interactor::ask(uni, i);
        if(cur != prev)
            uni.push_back(i);
        prev = cur;
    }
    vector<int> res(n + 1);
    for(int i = 0; i < sz(uni); ++i)
        res[uni[i]] = i + 1;
    debug(uni);
    for(int i = 1; i <= n; ++i){
        if(res[i])
            continue;
        int l = 0, r = sz(uni) - 1, pos = -1;
        while(l <= r){
            int mid = (l + r) >> 1;
            if(Interactor::ask(vector<int>(uni.begin(), uni.begin() + mid + 1), i) < mid + 2){
                pos = mid;
                r = mid - 1;
            }
            else
                l = mid + 1;
        }
        assert(pos != -1);
        res[i] = res[uni[pos]];
    }
    Interactor::answer(vector<int>(res.begin() + 1, res.end()));
}

int32_t main() {
    cin.tie(nullptr)->sync_with_stdio(0);
    #define task "troll"
    if(fopen(task".inp", "r")){
        freopen(task".inp", "r", stdin);
        freopen(task".out", "w", stdout);
    }
    int test = 1;
//    cin >> test;
    for(int i = 1; i <= test; ++i){
//        cout << "Case #" << i << ": ";
        solve();
    }
    #ifdef LOCAL
        cerr << "\n[Time]: " << 1000.0 * clock() / CLOCKS_PER_SEC << " ms.\n";
    #endif
    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

carnival.cpp: In function 'int32_t main()':
carnival.cpp:92:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   92 |         freopen(task".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
carnival.cpp:93:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   93 |         freopen(task".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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