제출 #1119290

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1119290		thangdz2k7	도서관 (JOI18_library)	C++17	0 / 100	425 ms	428 KiB

library

// author : thembululquaUwU
// 3.9.2024

#include <bits/stdc++.h>
#include "library.h"
#define pb push_back
#define fi first
#define se second
#define endl '\n'

using namespace std;
using ll = long long;
using ii = pair <int, int>;
using vi = vector <int>;

const int N = 1e5 + 5;
const int mod = 1e9 + 7;

void maxl(auto &a, auto b) {a = max(a, b);}
void minl(auto &a, auto b) {a = min(a, b);}

// grader

//int n, p[N];
//
//int Query(vector <int> qr){
//    int ans = 0;
//    for (int i = 1; i <= n; ++ i) if (qr[p[i]] == 1 && (i == 1 || !qr[p[i - 1]])) ++ ans;
//    return ans;
//}
//
//void Answer(vector <int> ans){
//    for (int f : ans) cout << f << ' ';
//}

// end

void Solve(int n){
    vector <int> a(n);
    iota(a.begin(), a.end(), 0);

    auto del = [&](int x) -> void {
        a.erase(a.begin() + x);
    };

    vector <int> qr(n, 1);
    int st = 0;
    for (int i = 1; i < n; ++ i){
        qr[i] = 0;
        if (Query(qr) == 1){
            st = i;
            break;
        }
        qr[i] = 1;
    }

    vector <int> ans = {st};
    del(st);
    for (int loops = 1; loops < n; ++ loops){
        int l = 0, r = a.size() - 1; //, g = 0;
        while (l <= r){
            int mid = l + r >> 1;
            qr.assign(n, 0);
            for (int i = 0; i <= mid; ++ i) qr[a[i]] = 1;
            int res = Query(qr);
            qr[ans.back()] = 1;
            if (res == Query(qr)) r = mid;
            else l = mid + 1;
        }
        ans.push_back(a[l]);
        del(l);
    }

    for (int &f : ans) f ++;
    Answer(ans);
}

//void solve(){
//    cin >> n;
//    for (int i = 1; i <= n; ++ i) cin >> p[i], p[i] --;
//    Solve(n);
//}
//
//int main(){
//    if (fopen("Library.inp", "r")){
//        freopen("Library.inp", "r", stdin);
//        freopen("Library.out", "w", stdout);
//    }
//    ios_base::sync_with_stdio(0);
//    cin.tie(0); cout.tie(0);
//
//    int t = 1; // cin >> t;
//    while (t --) solve();
//    return 0;
//}

컴파일 시 표준 에러 (stderr) 메시지

library.cpp:19:11: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
   19 | void maxl(auto &a, auto b) {a = max(a, b);}
      |           ^~~~
library.cpp:19:20: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
   19 | void maxl(auto &a, auto b) {a = max(a, b);}
      |                    ^~~~
library.cpp:20:11: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
   20 | void minl(auto &a, auto b) {a = min(a, b);}
      |           ^~~~
library.cpp:20:20: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
   20 | void minl(auto &a, auto b) {a = min(a, b);}
      |                    ^~~~
library.cpp: In function 'void Solve(int)':
library.cpp:62:25: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   62 |             int mid = l + r >> 1;
      |                       ~~^~~

• Subtask 1: 0 / 19
• Subtask 2: 0 / 81