Submission #1053932

#	Time	Username	Problem	Language	Result	Execution time	Memory
1053932		ArthuroWich	Unscrambling a Messy Bug (IOI16_messy)	C++17	100 / 100	1 ms	604 KiB

messy

#include "messy.h"
#include<bits/stdc++.h>
using namespace std;
vector<int> ans;
int n;
void build(int l, int r) {
    if (l == r) {
        return;
    }
    int m = (l+r)/2;
    string s(n, '1');
    for (int i = l; i <= r; i++) {
        s[i] = '0';
    }
    for (int i = l; i <= m; i++) {
        s[i] = '1';
        add_element(s);
        s[i] = '0';
    }
    build(l, m);
    build(m+1, r);
}
void calc(int l, int r, vector<int> a) {
    if (l == r) {
        ans[a[0]] = l;
        return;
    }
    int m = (l+r)/2;
    vector<int> le, ri;
    string s(n, '1');
    for (int i : a) {
        s[i] = '0';
    }
    for (int i : a) {
        s[i] = '1';
        if (check_element(s)) {
            le.push_back(i);
        } else {
            ri.push_back(i);
        }
        s[i] = '0';
    }
    calc(l, m, le);
    calc(m+1, r, ri);
}
vector<int> restore_permutation(int N, int w, int r) {
    n = N;
    ans.resize(n);
    build(0, n-1);
    compile_set();
    vector<int> a;
    for (int i = 0; i < n; i++) {
        a.push_back(i);
    }
    calc(0, n-1, a);
    return ans;
}

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