Submission #1169435

#	Time	Username	Problem	Language	Result	Execution time	Memory
1169435		vladilius	Library (JOI18_library)	C++20	100 / 100	118 ms	424 KiB

library

#include <bits/stdc++.h>
#include "library.h"
using namespace std;
using ll = long long;
using pii = pair<int, int>;
#define pb push_back
#define ff first
#define ss second

void Solve(int n){
    int f = 1;
    vector<int> used(n, 1);
    for (int i = 2; i <= n; i++){
        used[i - 1] = 0;
        if (Query(used) == 1){
            f = i;
            break;
        }
        used[i - 1] = 1;
    }

    vector<int> out = {f}, all;
    for (int i = 1; i <= n; i++){
        all.pb(i);
    }
    all.erase(find(all.begin(), all.end(), f));
    int tt = n - 1;
    while (tt--){
        int l = 0, r = (int) all.size() - 1;
        
        auto check = [&](int m){
            fill(used.begin(), used.end(), 0);
            for (int i = 0; i <= m; i++){
                used[all[i] - 1] = 1;
            }
            int x = Query(used);
            used[f - 1] = 1;
            int y = Query(used);
            return (x == y);
        };

        while (l + 1 < r){
            int m = (l + r) / 2;
            if (check(m)){
                r = m;
            }
            else {
                l = m + 1;
            }
        }

        if (check(l)) r = l;
        
        f = all[r]; out.pb(f);
        all.erase(all.begin() + r);
    }
    Answer(out);
}

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