Submission #535441

#	Time	Username	Problem	Language	Result	Execution time	Memory
535441		mario05092929	Unscrambling a Messy Bug (IOI16_messy)	C++14	100 / 100	20 ms	468 KiB

messy

#include "messy.h"
#include <bits/stdc++.h>
#define x first
#define y second
using namespace std;
typedef long long ll;
typedef pair <ll,ll> pi;
typedef vector <int> vec;
const ll INF = 1e18;
int n;
vec ans;

void build(int l,int r) {
    if(l == r) return;
    int mid = (l + r) >> 1;
    string p;
    for(int i = 0;i < l;i++) p += "1";
    for(int i = l;i <= r;i++) p += "0";
    for(int i = r+1;i < n;i++) p += "1";
    for(int i = l;i <= mid;i++) {
        p[i] = '1';
        //cout << p << '\n';
        add_element(p);
        p[i] = '0';
    }
    build(l,mid), build(mid+1,r);
}

void go(vec x,int l,int r) {
    if(l == r) {
        ans[x[0]] = l; return;
    }
    string p;
    for(int i = 0;i < n;i++) p += "1";
    for(int i : x) p[i] = '0';
    vec ne[2];
    for(int i : x) {
        p[i] = '1';
        ne[(int)check_element(p)].push_back(i);
        p[i] = '0';
    }
    int mid = (l + r) >> 1;
    go(ne[1],l,mid), go(ne[0],mid+1,r);
}

vec restore_permutation(int N,int w,int r) {
    n = N;
    build(0,n-1);
    compile_set();
    ans.resize(n);
    vec tmp;
    for(int i = 0;i < n;i++) tmp.push_back(i);
    go(tmp,0,n-1);
    return ans;
}

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