Submission #926737

#	Time	Username	Problem	Language	Result	Execution time	Memory
926737		GrindMachine	Mechanical Doll (IOI18_doll)	C++17	9 / 100	67 ms	11092 KiB

doll

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>

using namespace std;
using namespace __gnu_pbds;

template<typename T> using Tree = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
typedef long long int ll;
typedef long double ld;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;

#define fastio ios_base::sync_with_stdio(false); cin.tie(NULL)
#define pb push_back
#define endl '\n'
#define sz(a) (int)a.size()
#define setbits(x) __builtin_popcountll(x)
#define ff first
#define ss second
#define conts continue
#define ceil2(x,y) ((x+y-1)/(y))
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
#define yes cout << "Yes" << endl
#define no cout << "No" << endl

#define rep(i,n) for(int i = 0; i < n; ++i)
#define rep1(i,n) for(int i = 1; i <= n; ++i)
#define rev(i,s,e) for(int i = s; i >= e; --i)
#define trav(i,a) for(auto &i : a)

template<typename T>
void amin(T &a, T b) {
    a = min(a,b);
}

template<typename T>
void amax(T &a, T b) {
    a = max(a,b);
}

#ifdef LOCAL
#include "debug.h"
#else
#define debug(x) 42
#endif

/*



*/

const int MOD = 1e9 + 7;
const int N = 1e5 + 5;
const int inf1 = int(1e9) + 5;
const ll inf2 = ll(1e18) + 5;

#include "doll.h"

void create_circuit(int m, std::vector<int> a) {
    // int N = A.size();
    // std::vector<int> C(M + 1);
    // C[0] = -1;
    // for (int i = 1; i <= M; ++i) {
    //     C[i] = 1;
    // }
    // std::vector<int> X(N), Y(N);
    // for (int k = 0; k < N; ++k) {
    //     X[k] = Y[k] = A[k];
    // }
    // answer(C, X, Y);

    int n = sz(a);
    vector<int> b(m+1);
    b[0] = 1;
    b[1] = -1;

    ll siz = 1;
    while(siz < n) siz <<= 1;

    vector<int> sx(siz), sy(siz);    
    vector<int> flipped(siz);

    rep1(i,siz/2-1){
        sx[i] = -(i*2);
        sy[i] = -(i*2+1);
    }

    rep1(iter,siz){
        ll ptr = 1;
        while(ptr < siz/2){
            flipped[ptr] ^= 1;
            if(flipped[ptr]){
                ptr = ptr*2;
            }
            else{
                ptr = ptr*2+1;
            }
        }

        ll nxt = 0;

        if(iter < n){
            nxt = 1;
        }
        else if(iter < siz){
            nxt = -1;
        }
        else{
            nxt = 0;
        }

        flipped[ptr] ^= 1;
        if(flipped[ptr]){
            sx[ptr] = nxt;
        }
        else{
            sy[ptr] = nxt;
        }
    }

    sx.erase(sx.begin());
    sy.erase(sy.begin());

    answer(b,sx,sy);

    // vector<int> cnt(m+1);
    // rep(i,n) cnt[a[i]]++;
    // rep(i,m+1){
    //     if(cnt[i] == 1){
    //         a.pb(i);
    //     }
    // }

    // auto on = n;
    // n = sz(a);
    // b[0] = a[0];
    // vector<int> switch_id(m+1,-1); // trigger i is connected to which switch?
    // int ptr = 1;

    // rep(i,n){
    //     int x = a[i];
    //     if(switch_id[x] == -1){
    //         switch_id[x] = ptr;
    //         b[x] = -ptr;
    //         sx.pb(0);
    //         sy.pb(0);
    //         if(i+1 < on){
    //             sx[ptr] = a[i+1];
    //         }
    //         else if(i+1 < n){
    //             sx[ptr] = -switch_id[a[i+1]];
    //         }
    //         ptr++;
    //     }
    //     else{
    //         b[x] = -switch_id[x];
    //         if(i+1 < on){
    //             sy[switch_id[x]] = a[i+1];
    //         }
    //         else if(i+1 < n){
    //             sy[switch_id[x]] = -switch_id[a[i+1]];
    //         }
    //     }
    // }

    // sx.erase(sx.begin());
    // sy.erase(sy.begin());
    // debug(b);
    // debug(sx);
    // debug(sy);

    // answer(b,sx,sy);
}

• Subtask 1: 0 / 2
• Subtask 2: 0 / 4
• Subtask 3: 0 / 10
• Subtask 4: 0 / 10
• Subtask 5: 9.0000000036 / 18
• Subtask 6: 0 / 56