Submission #1121640

#	Time	Username	Problem	Language	Result	Execution time	Memory
1121640		vjudge1	Unscrambling a Messy Bug (IOI16_messy)	C++17	100 / 100	3 ms	760 KiB

messy

#include <vector>
#include <bits/stdc++.h>
#include "messy.h"
 
using namespace std;
 
const int MAX = 130;
 
void write(int l, int r, int n){
    if(l == r) return;
    string s = "";
    for(int i = 0; i < n; i++){
        if(l <= i && i <= r){
            s += '0';
        }
        else{
            s += '1';
        }
    }
    int mid = (l + r) / 2;
    for(int i = l; i <= mid; i++){
        s[i] = '1';
        add_element(s);
        s[i] = '0';
    }
    write(l, mid, n);
    write(mid + 1, r, n);
}
 
int p[MAX];
 
void read(int l, int r, vector<int> inc, int n){
    if(l == r){
        p[inc[0]] = l;
        return;
    }
    string s = "";
    for(int i = 0; i < n; i++){
        s += '1';
    }
    for(int a : inc){
        s[a] = '0';
    }
    int mid = (l + r) / 2;
    vector<int> lv, rv;
    for(int i : inc){
        s[i] = '1';
        if(check_element(s)){
            lv.push_back(i);
        }
        else{
            rv.push_back(i);
        }
        s[i] = '0';
    }
    read(l, mid, lv, n);
    read(mid + 1, r, rv, n);
}
 
vector<int> restore_permutation(int n, int w, int r) {
    write(0, n - 1, n);
    compile_set();
    vector<int> tmp;
    for(int i = 0; i < n; i++) tmp.push_back(i);
    read(0, n - 1, tmp, n);
    vector<int> res;
    for(int i = 0; i < n; i++){
        res.push_back(p[i]);
    } 
    return res;
}

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