Submission #961900

#	Time	Username	Problem	Language	Result	Execution time	Memory
961900		ThegeekKnight16	Unscrambling a Messy Bug (IOI16_messy)	C++17	100 / 100	2 ms	612 KiB

messy

#include <bits/stdc++.h>
#include <vector>
#include "messy.h"
using namespace std;
// add_element("0");
// compile_set();
// check_element("0");

void dcBuild(int ini, int fim, int N)
{
    if (ini == fim) return;
    string resp(N, '0');
    for (int i = 0; i < N; i++) if (i < ini || i > fim) resp[i] = '1';
    int m = (ini + fim)>>1;
    for (int j = m+1; j <= fim; j++)
    {
        resp[j] = '1';
        add_element(resp);
        resp[j] = '0';
    }

    dcBuild(ini, m, N);
    dcBuild(m+1, fim, N);
}

void dcResp(int path, vector<int> &p, const vector<int> &sameBit, const vector<int> &otherBit, int N)
{
    if (sameBit.size() == 1) {p[sameBit.back()] = path; return;}
    string resp(N, '0');
    for (auto x : otherBit) resp[x] = '1';
    vector<int> lSame, lOther = otherBit, rSame, rOther = otherBit;
    for (auto x : sameBit)
    {
        resp[x] = '1';
        if (check_element(resp)) lOther.push_back(x), rSame.push_back(x);
        else lSame.push_back(x), rOther.push_back(x);
        resp[x] = '0';
    }

    dcResp((path<<1)+0, p, lSame, lOther, N);
    dcResp((path<<1)+1, p, rSame, rOther, N);
}

vector<int> restore_permutation(int N, int W, int R)
{
    dcBuild(0, N-1, N);
    compile_set();
    vector<int> p(N), sameBit(N), otherBit;
    iota(sameBit.begin(), sameBit.end(), 0);
    dcResp(0, p, sameBit, otherBit, N);
    return p;
}

• Subtask 1: 20 / 20
• Subtask 2: 18 / 18
• Subtask 3: 11 / 11
• Subtask 4: 21 / 21
• Subtask 5: 30 / 30