Submission #597785

#	Time	Username	Problem	Language	Result	Execution time	Memory
597785		yanndev	Art Collections (BOI22_art)	C++17	100 / 100	1589 ms	636 KiB

art

#include <art.h>
#include <bits/stdc++.h>
using namespace std;

void solve(int n) {
    vector<int> posOfVal(n, -1);
    // 0 indexed ranks
    // newInv = oldInv - (rank) + (n - rank - 1)
    // newInv = oldInv - (2 * rank) + (n - 1)
    // rank = -(newInv - oldInv - (n - 1)) / 2

    vector<int> ls (n);
    for (int i = 0; i < n; i++)
        ls[i] = i + 1;

    int firstInv = publish(ls);
    int oldInv = firstInv;
    
    for (int i = 0; i < n; i++) {
        rotate(ls.begin(), ls.begin() + 1, ls.end());
        int newInv = firstInv;
        if (i + 1 < n)
            newInv = publish(ls);
        posOfVal[i + 1] = -(newInv - oldInv - (n - 1)) / 2;
        oldInv = newInv;
    }

    vector<int> ans (n, -1);
    for (int i = 1; i <= n; i++)
        ans[posOfVal[i]] = 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: 30 / 30