Submission #641978

#	Time	Username	Problem	Language	Result	Execution time	Memory
641978		QwertyPi	Unscrambling a Messy Bug (IOI16_messy)	C++14	100 / 100	2 ms	468 KiB

messy

#include <vector>

#include "messy.h"

#include <bits/stdc++.h>

using namespace std;

int n;
string s;
int p[128];

vector<int> a[128], a_sw[128];
std::vector<int> restore_permutation(int n, int w, int r) {
    ::n = n;
    s.resize(n);
    for(int sz = n / 2; sz; sz /= 2){
        for(int i = 0; i < n; i += sz * 2){
            int l = i + sz, r = i + sz * 2;
            for(int j = l; j < r; j++){
                fill(begin(s), begin(s) + n, '0');
                fill(begin(s) + i, begin(s) + i + sz * 2, '1');
                s[j] = '0';
                add_element(s);
            }
        }
    }
    
    compile_set();
    
    for(int i = 0; i < n; i++) a[0].push_back(i);
    for(int sz = n / 2; sz; sz /= 2){
        for(int i = 0; i < n / sz / 2; i++){
            for(auto j : a[i]){
                fill(begin(s), begin(s) + n, '0');
                for(auto k : a[i]){
                    s[k] = '1';
                }
                s[j] = '0';
                bool c = check_element(s);
                if(c) a_sw[i * 2 + 1].push_back(j);
                else  a_sw[i * 2 + 0].push_back(j);
            }
        }
        for(int i = 0; i < n; i++){
            swap(a[i], a_sw[i]);
        }
        for(int i = 0; i < n; i++){
        	a_sw[i].clear();
		}
    }
    
    vector<int> result(n);
    for(int i = 0; i < n; i++) result[a[i][0]] = i;
	return result;
}

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