Submission #713807

#	Time	Username	Problem	Language	Result	Execution time	Memory
713807		LittleOrange	Mechanical Doll (IOI18_doll)	C++17	10 / 100	1084 ms	340 KiB

doll

#include "doll.h"
#include <bits/stdc++.h>
using namespace std;
using ll = int;
const ll inf = 1e8;
void create_circuit(int M, std::vector<int> A){
    int N = A.size();
    std::vector<int> C(M + 1, 0);
    C[0] = A[0];
    if (N == 1){
        for (int i = 1; i <= M; ++i)
            C[i] = 0;
        vector<int> X, Y;
        answer(C, X, Y);
        return;
    }
    for (int i = 1; i <= M; ++i){
        C[i] = -1;
    }
    ll GN = 1 << (__lg(N - 1) + 1);
    A.push_back(0);
    vector<int> X,Y;
    ll it = 0;
    function<ll(ll, ll)> dfs;
    dfs = [&](ll cnt, ll width){
        if (cnt == 1){
            return inf;
        }
        ll i = it++;
        X.emplace_back();
        Y.emplace_back();
        if (width>=cnt*2){
            X[i] = -1;
            Y[i] = dfs(cnt,width/2);
        }else{
            ll leftsize = 1<<__lg(cnt-1);
            X[i] = dfs(leftsize,leftsize);
            Y[i] = dfs(cnt-leftsize,leftsize);
        }
        return -1 - i;
    };
    dfs(N, GN);
    ll ait = 1;
    ll cur = -1;
    vector<ll> stat(X.size(),0);
    while(ait<=N){
        ll *to;
        if (stat[-cur-1]){
            to = &Y[-cur-1];
        }else{
            to = &X[-cur-1];
        }
        stat[-cur-1]^=1;
        if (*to == inf){
            *to = A[ait++];
            cur = -1;
        }else{
            cur = *to;
        }
    }
    answer(C, X, Y);
}

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