Submission #390284

#	Time	Username	Problem	Language	Result	Execution time	Memory
390284		faresbasbs	Unscrambling a Messy Bug (IOI16_messy)	C++14	100 / 100	3 ms	464 KiB

messy

#include <bits/stdc++.h>
#include "messy.h"
using namespace std;
int n,freq[128];
vector<int> v;

void hs(int l , int r){
    if(l == r){
        return ;
    }
    string s(n,'0');
    for(int i = l ; i <= r ; i += 1){
        s[i] = '1';
    }
    int mid = (l+r)/2;
    for(int i = mid+1 ; i <= r ; i += 1){
        s[i] = '0';
        add_element(s);
        s[i] = '1';
    }
    hs(l,mid),hs(mid+1,r);
}

void hs2(int l , int r){
    if(l == r){
        freq[v[0]] = l;
        return ;
    }
    string s(n,'0');
    for(int i : v){
        s[i] = '1';
    }
    int mid = (l+r)/2;
    vector<int> ll , rr;
    for(int i : v){
        s[i] = '0';
        if(check_element(s)){
            rr.push_back(i);
        }else{
            ll.push_back(i);
        }
        s[i] = '1';
    }
    v = ll , hs2(l,mid) , v = rr , hs2(mid+1,r);
}

vector<int> restore_permutation(int N , int w , int r){
    n = N;
    hs(0,n-1);
    compile_set();
    for(int i = 0 ; i < n ; i += 1){
        v.push_back(i);
    }
    hs2(0,n-1);
    vector<int> ret;
    for(int i = 0 ; i < n ; i += 1){
        ret.push_back(freq[i]);
    }
    return ret;
}

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