Submission #428371

#	Time	Username	Problem	Language	Result	Execution time	Memory
428371		jk410	Unscrambling a Messy Bug (IOI16_messy)	C++17	100 / 100	3 ms	488 KiB

messy

#include <bits/stdc++.h>
#include "messy.h"
using namespace std;
int N;
vector<int> ans;
void write(int s,int e){
    if (s==e)
        return;
    string t="";
    for (int i=0; i<N; i++)
        t.push_back('1');
    int m=(s+e)>>1;
    for (int i=s; i<=e; i++)
        t[i]='0';
    for (int i=s; i<=m; i++){
        t[i]='1';
        add_element(t);
        t[i]='0';
    }
    write(s,m);
    write(m+1,e);
}
void read(int s,int e,vector<int> v){
    if (s==e){
        ans[v[0]]=s;
        return;
    }
    vector<int> l,r;
    string t="";
    for (int i=0; i<N; i++)
        t.push_back('1');
    for (int i:v)
        t[i]='0';
    for (int i:v){
        t[i]='1';
        if (check_element(t))
            l.push_back(i);
        else
            r.push_back(i);
        t[i]='0';
    }
    int m=(s+e)>>1;
    read(s,m,l);
    read(m+1,e,r);
}
vector<int> restore_permutation(int n, int w, int r) {
    N=n;
    ans.resize(N);
    write(0,N-1);
    compile_set();
    vector<int> v;
    for (int i=0; i<N; i++)
        v.push_back(i);
    read(0,N-1,v);
    return ans;
}

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