Submission #373343

#	Time	Username	Problem	Language	Result	Execution time	Memory
373343		flappybird	Unscrambling a Messy Bug (IOI16_messy)	C++14	100 / 100	3 ms	620 KiB

messy

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

ll N;
ll arr[128];

void add(ll l, ll r) {
    if (l == r) return;
    ll i;
    string s;
    s.resize(N);
    for (i = 0; i < N; i++) s[i] = '0';
    for (i = 0; i < l; i++) s.replace(s.begin() + i, s.begin() + i + 1, "1");
    for (i = r + 1; i < N; i++) s.replace(s.begin() + i, s.begin() + i + 1, "1");
    ll mid = (l + r) >> 1;
    for (i = mid + 1; i <= r; i++) {
        s.replace(s.begin() + i, s.begin() + i + 1, "1");
        add_element(s);
        s.replace(s.begin() + i, s.begin() + i + 1, "0");
    }
    add(l, mid);
    add(mid + 1, r);
}

void check(ll x, ll k) {
    if (!k) return;
    ll i;
    string s;
    s.resize(N);
    for (i = 0; i < N; i++) {
        if (arr[i] == x) s[i] = '0';
        else s[i] = '1';
    }
    for (i = 0; i < N; i++) {
        if (s[i] == '0') {
            s[i] = '1';
            if (check_element(s)) arr[i] += k;
            s[i] = '0';
        }
    }
    check(x, k / 2);
    check(x + k, k / 2);
}

std::vector<int> restore_permutation(int n, int w, int r) {
    N = n;
    add(0, N - 1);
    compile_set();
    check(0, N / 2);
    vector<ll> res;
    ll i;
    res.resize(N);
    for (i = 0; i < N; i++) {
        res[i] = arr[i];
    }
    return res;
}

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