Submission #602325

#	Time	Username	Problem	Language	Result	Execution time	Memory
602325		skittles1412	Mechanical Doll (IOI18_doll)	C++17	10 / 100	1090 ms	3632 KiB

doll

#include "bits/extc++.h"

using namespace std;

template <typename T>
void dbgh(const T& t) {
    cerr << t << endl;
}

template <typename T, typename... U>
void dbgh(const T& t, const U&... u) {
    cerr << t << " | ";
    dbgh(u...);
}

#ifdef DEBUG
#define dbg(...)                                              \
    cerr << "L" << __LINE__ << " [" << #__VA_ARGS__ << "]: "; \
    dbgh(__VA_ARGS__);
#else
#define dbg(...)
#define cerr   \
    if (false) \
    cerr
#endif

#define endl "\n"
#define long int64_t
#define sz(x) int((x).size())

void answer(vector<int> C, vector<int> X, vector<int> Y);

vector<int> arr;
vector<pair<int, int>> ans;

const int none = -1e9;

int n, pref, root = none;

void init(int& o, int l, int r, int i) {
    if (r < pref) {
        o = root;
        return;
    } else if (l == r) {
        o = arr.back();
        arr.pop_back();
        return;
    }
    if (o == none) {
        o = -sz(ans) - 1;
        ans.emplace_back(none, none);
    }
    int mid = (l + r) / 2;
    if (i % 2 == 0) {
        init(ans[-o - 1].first, l, mid, i >> 1);
    } else {
        init(ans[-o - 1].second, mid + 1, r, i >> 1);
    }
}

void create_circuit(int m, vector<int> _arr) {
    arr = _arr;
    int first = arr[0];
    arr.erase(arr.begin());
    arr.push_back(0);
    reverse(begin(arr), end(arr));

    n = sz(arr);
    int targ = 1 << (__lg(n - 1) + 1);
    pref = targ - n;
    for (int i = 0; i < targ; i++) {
        ans.reserve(sz(ans) + 1000);
        init(root, 0, targ - 1, i);
    }
    vector<int> ans1(m + 1, root);
    ans1[0] = first;
    vector<int> ans2, ans3;
    for (auto& [x, y] : ans) {
        ans2.push_back(x);
        ans3.push_back(y);
    }
    answer(ans1, ans2, ans3);
}

• Subtask 1: 0 / 2
• Subtask 2: 0 / 4
• Subtask 3: 0 / 10
• Subtask 4: 10 / 10
• Subtask 5: 0 / 18
• Subtask 6: 0 / 56