Submission #563456

#	Time	Username	Problem	Language	Result	Execution time	Memory
563456		elazarkoren	Unscrambling a Messy Bug (IOI16_messy)	C++17	100 / 100	2 ms	496 KiB

messy

#include <bits/stdc++.h>
#include "messy.h"
#define x first
#define y second
#define all(v) v.begin(), v.end()
#define chkmin(a, b) a = min(a, b)
#define chkmax(a, b) a = max(a, b)
using namespace std;
typedef long long ll;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef pair<int, int> pii;
typedef vector<pii> vii;

const int MAX_N = 150;

int n;

void Create(int l, int r) {
    if (l + 1 == r) return;
    string s(n, '1');
    fill(s.begin() + l, s.begin() + r, '0');
    for (int i = l; i < (l + r) >> 1; i++) {
        s[i] = '1';
        add_element(s);
        s[i] = '0';
    }
    Create(l, (l + r) >> 1), Create((l + r) >> 1, r);
}

vi ans;

void Solve(int l, int r, vi &image) {
    if (l + 1 == r) {
        ans[image[0]] = l;
        return;
    }
    string s(n, '1');
    for (int i : image) s[i] = '0';
    vi left, right;
    for (int i = 0; i < n; i++) {
        if (s[i] == '0') {
            s[i] = '1';
            if  (check_element(s)) left.push_back(i);
            else right.push_back(i);
            s[i] = '0';
        }
    }
    Solve(l, (l + r) >> 1, left), Solve((l + r) >> 1, r, right);
}

vi restore_permutation(int N, int w, int r) {
    n = N;
    Create(0, n);
    compile_set();
    ans.resize(n);
    vi image(n);
    iota(all(image), 0);
    Solve(0, n, image);
    return ans;
}

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