제출 #419863

#제출 시각아이디문제언어결과실행 시간메모리
419863xt0r3Unscrambling a Messy Bug (IOI16_messy)C++14
100 / 100
2 ms460 KiB
#include <bits/stdc++.h>
#include "messy.h"
using namespace std;


vector<int> ans;

void add(int l, int r, int n){
    if(l == r) return;

    int m = (l + r) / 2;
    string s(n, '1');
    for(int i = l; i <= r; i++){
        s[i] = '0';
    }

    for(int i = l; i <= m; i++){
        s[i] = '1';
        add_element(s);
        s[i] = '0';
    }

    add(l, m, n);
    add(m + 1, r, n);
}

void get(int l, int r, int n, const vector<int> &perm){
    if(r == l){
        ans[perm[0]] = l;
        return;
    }

    int m = (l + r) / 2;
    string s(n, '1');
    vector<int> on, off;
    for(int x : perm) s[x] = '0';//perm-ben vannak a lehetseges dolgok
    for(int x : perm){
        s[x] = '1';
        (check_element(s) ? on : off).push_back(x);
        s[x] = '0';
    }
    get(l, m, n, on);
    get(m + 1, r, n, off);
}

std::vector<int> restore_permutation(int n, int w, int r) {
    ans.resize(n);

    add(0, n - 1, n);

    compile_set();

    vector<int> start(n);
    iota(start.begin(), start.end(), 0);
    get(0, n - 1, n, start);

    return ans;
}
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