Submission #58425

#	Time	Username	Problem	Language	Result	Execution time	Memory
58425		FLDutchman	Unscrambling a Messy Bug (IOI16_messy)	C++14	100 / 100	4 ms	640 KiB

messy

#include "messy.h"
#include <bits/stdc++.h>
using namespace std;

typedef int INT;

#define pb push_back
#define FOR(i, l, r) for(int i = (l); i < (r); i++)
#define fst first
#define snd second
#define int long long

typedef vector<int> vi;
typedef pair<int, int> ii;
typedef vector<ii> vii;
typedef long long ll;

const ll INF = 1e15;
int N;
vector<INT> p;


void buildSet(int l, int r){
    //cout << "Building " << l << " " << r << endl;
    if(l + 1 == r) return;
    string s(N, '0');
    FOR(i, 0, l) s[i] = '1';
    FOR(i, r, N) s[i] = '1';
    int m = (l+r)/2;
    FOR(i, l, m){
        s[i] = '1';
        add_element(s);
        s[i] = '0';
    }
    buildSet(l, m);
    buildSet(m, r);
}

void getPerm(int l, int r, vi elems){
    if(elems.size() == 1) {
        p[elems[0]] = l;
        return;
    }
    vi lelems, relems;
    string s(N, '1');
    for(int i : elems) s[i] = '0';
    for(int i : elems) {
        s[i] = '1';
        if(check_element(s)) lelems.pb(i);
        else relems.pb(i);
        s[i] = '0';
    }
    int m = (l+r)/2;
    getPerm(l, m, lelems);
    getPerm(m, r, relems);
}

std::vector<INT> restore_permutation(INT n, INT w, INT r) {
    N = n;
    p.assign(n, -1);
    buildSet(0, N);
    compile_set();
    vi start;
    FOR(i, 0, N) start.pb(i);
    getPerm(0, N, start);
    return p;
}


/*
8 24 24
1 3 2 5 6 7 0 4


*/

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