Submission #485247

#	Time	Username	Problem	Language	Result	Execution time	Memory
485247		couplefire	Unscrambling a Messy Bug (IOI16_messy)	C++17	100 / 100	3 ms	552 KiB

messy

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

vector<int> restore_permutation(int n, int w, int r){
    for(int siz = n; siz>=2; siz>>=1){
        for(int l = 0, r = siz; r<=n; l = r, r += siz){
            string s(n, '1');
            for(int i = l; i<r; ++i)
                s[i] = '0';
            for(int i = l; i<(l+r)>>1; ++i){
                s[i] = '1';
                add_element(s);
                s[i] = '0';
            }
        }
    } compile_set();
    vector<int> p(n), ans(n);
    iota(p.begin(), p.end(), 0);
    for(int siz = n; siz>=2; siz>>=1){
        for(int l = 0, r = siz; r<=n; l = r, r += siz){
            string s(n, '1');
            for(int i = l; i<r; ++i)
                s[p[i]] = '0';
            vector<int> lside, rside;
            for(int i = l; i<r; ++i){
                s[p[i]] = '1';
                if(check_element(s)) lside.push_back(p[i]);
                else rside.push_back(p[i]);
                s[p[i]] = '0';
            }
            vector<int> tmp = lside;
            tmp.insert(tmp.end(), rside.begin(), rside.end());
            for(int i = l; i<r; ++i)
                p[i] = tmp[i-l];
        }
    }
    for(int i = 0; i<n; ++i)
        ans[p[i]] = i;
    return ans;
}

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