Submission #999550

#	Time	Username	Problem	Language	Result	Execution time	Memory
999550		phoenix	Mechanical Doll (IOI18_doll)	C++17	37 / 100	84 ms	14828 KiB

doll

#include "doll.h"
#include <bits/stdc++.h>

using namespace std;

int S = 0;
vector<int> X, Y;

int create_switch(int L, int R) {
    X.push_back(L);
    Y.push_back(R);
    S++;
    return -S;
}

int build(vector<int> v) {
    if ((int)v.size() == 1) {
        return v[0];
    }
    if (v[0] == -1 && v.back() == -1) {
        return -1;
    }
    int m = (int)v.size();
    int L, R;
    if (m & 1) {
        if (v.back()) {
            v.push_back(-1);
        } else {
            v.pop_back();
            v.push_back(-1);
            v.push_back(0);
        }
        m++;
    }
    vector<int> lv, rv;
    for (int i = 0; i < m; i++) {
        if (i & 1) rv.push_back(v[i]);
        else lv.push_back(v[i]);
    }

    L = build(lv);
    R = build(rv);
    return create_switch(L, R);
}

void create_circuit(int M, vector<int> A) {
    A.push_back(0);
    create_switch(-1, -1);
    
    int root = build(A);
    Y[0] = root;

    vector<int> C(M + 1, root);
    
    answer(C, X, Y);
}

• Subtask 1: 0 / 2
• Subtask 2: 0 / 4
• Subtask 3: 0 / 10
• Subtask 4: 0 / 10
• Subtask 5: 9 / 18
• Subtask 6: 28 / 56