Submission #851009

#	Time	Username	Problem	Language	Result	Execution time	Memory
851009		12345678	Unscrambling a Messy Bug (IOI16_messy)	C++17	100 / 100	2 ms	856 KiB

messy

#include "messy.h"
#include <bits/stdc++.h>

using namespace std;

const int nx=128;
int N;
bool vs[nx], t[nx];
vector<int> ans;
string s;

void add(int l, int r)
{
    int md=(l+r)/2;
    for (int i=0; i<N; i++) s[i]='1';
    for (int i=l; i<r; i++) s[i]='0';
    for (int i=l; i<md; i++) s[i]='1', add_element(s), s[i]='0';
    if (r-l>2) add(l, md), add(md, r);
}

void check(vector<int> c, int l, int r)
{
    vector<int> g1, g2;
    int md=(l+r)/2;
    for (int i=0; i<N; i++) s[i]='1';
    for (auto x:c) s[x]='0';
    for (auto x:c)
    {
        s[x]='1';
        if (check_element(s)) g1.push_back(x);
        else g2.push_back(x);
        s[x]='0';
    }
    if (c.size()>2) check(g1, l, md), check(g2, md, r);
    else ans[g1[0]]=l, ans[g2[0]]=l+1;
}

vector<int> restore_permutation(int n, int w, int r) {
    N=n;
    ans.resize(N);
    for (int i=0; i<n; i++) s+='0';
    add(0, n);
    compile_set();
    vector<int> tmp;
    for (int i=0; i<n; i++) tmp.push_back(i);
    check(tmp, 0, n);
    return ans;
}

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