Submission #525199

#	Time	Username	Problem	Language	Result	Execution time	Memory
525199		qwerasdfzxcl	Mechanical Doll (IOI18_doll)	C++14	44 / 100	100 ms	19544 KiB

doll

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

using namespace std;
typedef long long ll;
vector<int> C, X, Y, Q[100100];

int l;
vector<int> nxt;

void build_tree(int i, int root, int H, int val, bool on){
    if (on && (val&(1<<H))) X[i] = -root;
    else if (H){
        X.push_back(1e9);
        Y.push_back(1e9);
        X[i] = -(int)X.size();
        build_tree((int)X.size()-1, root, H-1, val, 0);
    }

    if (H){
        X.push_back(1e9);
        Y.push_back(1e9);
        Y[i] = -(int)X.size();
        build_tree((int)X.size()-1, root, H-1, val, on&1);
    }
}

bool ON[200200];
void getidx(int i){
    ON[i] ^= 1;
    if (ON[i]){
        if (X[i]==1e9) X[i] = nxt[l++];
        else getidx(-X[i]-1);
    }
    else{
        if (Y[i]==1e9) Y[i] = nxt[l++];
        else getidx(-Y[i]-1);
    }
}

void create_circuit(int M, std::vector<int> A) {
    int n = A.size();
    C.resize(M+1);
    A.push_back(0);
    C[0] = A[0];

    for (int i=0;i<n;i++) Q[A[i]].push_back(A[i+1]);

    for (int i=1;i<=M;i++){
        if (Q[i].empty()) continue;
        if (Q[i].size()==1) {C[i] = Q[i][0]; continue;}

        l = 0, nxt = Q[i];
        X.push_back(1e9); Y.push_back(1e9);
        C[i] = -(int)X.size();

        int t = 1, h = 0, R = (int)X.size()-1;
        for (;t<(int)Q[i].size();t<<=1, h++);

        build_tree(R, R+1, h-1, t-(int)Q[i].size(), 1);
        while(l<(int)nxt.size()) getidx(R);
    }

    answer(C, X, Y);
}

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