Submission #153993

#	Time	Username	Problem	Language	Result	Execution time	Memory
153993		karma	Library (JOI18_library)	C++14	100 / 100	546 ms	504 KiB

library

#include<bits/stdc++.h>
#include "library.h"
#define pb      emplace_back
#define ll      long long

using namespace std;

const int N = int(2e3) + 7;

vector<int> m, ans, s;
int low, high, mid, cur;

void Solve(int n) {
    if(n == 1) {Answer({1}); return;}
    m.resize(n, 1); s.resize(n);
    for(int i = 0; i < n; ++i) {
       m[i] = 0;
       if(Query(m) == 1) {cur = i; break;}
       m[i] = 1;
    }
    iota(s.begin(), s.end(), 0);
    ans.pb(cur + 1);
    s.erase(find(s.begin(), s.end(), cur));
    while(s.size()) {
       low = 0, high = s.size() - 1;
       while(low <= high) {
           mid = (low + high) >> 1;
           fill(m.begin(), m.end(), 0);
           for(int i = 0; i <= mid; ++i) m[s[i]] = 1;
           int res = Query(m);
           m[cur] = 1;
           if(res == Query(m)) high = mid - 1;
           else low = mid + 1;
       }
       cur = s[low];
       ans.pb(cur + 1);
       s.erase(find(s.begin(), s.end(), cur));
    }
    Answer(ans);
}

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