Submission #867756

#	Time	Username	Problem	Language	Result	Execution time	Memory
867756		Dec0Dedd	Art Collections (BOI22_art)	C++17	70 / 100	1255 ms	1584 KiB

art

#include <bits/stdc++.h>
#include "art.h"

using namespace std;

// n <= 4 000
// q <= 4 000

void solve(int n) {
    vector<int> ans(n, 0);

    for (int i=1; i<=n; ++i) {
        vector<int> v;
        for (int j=1; j<=n; ++j) v.push_back(j);
        v.erase(v.begin()+i-1); v.insert(v.begin(), i);
        int c1=publish(v);
        v.erase(v.begin()), v.push_back(i);
        int c2=publish(v);

        // a = # of greater than i
        // b = # of smaller than i 
        // a-b = c1-c2
        // a+b = n-1
        // a = (c1-c2+n-1)/2
        assert((c1-c2+n-1)%2 == 0);
        int b=(c1-c2+n-1)/2;
        ans[b]=i;
    }
    answer(ans);
}

Compilation message (stderr)

interface.cpp: In function 'int publish(std::vector<int>)':
interface.cpp:20:17: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   20 |     if(v.size() != N) {
      |        ~~~~~~~~~^~~~
interface.cpp: In function 'void answer(std::vector<int>)':
interface.cpp:36:17: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   36 |     if(v.size() != N) {
      |        ~~~~~~~~~^~~~

• Subtask 1: 5 / 5
• Subtask 2: 15 / 15
• Subtask 3: 15 / 15
• Subtask 4: 15 / 15
• Subtask 5: 20 / 20
• Subtask 6: 0 / 30