Submission #1028765

#	Time	Username	Problem	Language	Result	Execution time	Memory
1028765		mindiyak	Mechanical Doll (IOI18_doll)	C++14	25 / 100	181 ms	27972 KiB

doll

#include "doll.h"
#pragma GCC optimize("O1,O2,O3,Ofast,unroll-loops")
#include <bits/stdc++.h>
#include <string>
#include <iostream>
#include <cmath>
#include <numeric>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef pair<int, int> pi;
typedef pair<int, int> pl;
typedef pair<ld, ld> pd;
typedef vector<int> vi;
typedef vector<bool> vb;
typedef vector<vector<int>> vvi;
typedef vector<ld> vd;
typedef vector<ll> vl;
typedef vector<pi> vpi;
typedef vector<pl> vpl;
#define FOR(i, a, b) for (int i = a; i < (b); i++)
#define F0R(i, a) for (int i = 0; i < (a); i++)
#define FORd(i, a, b) for (int i = (b)-1; i >= a; i--)
#define F0Rd(i, a) for (int i = (a)-1; i >= 0; i--)
#define trav(a, x) for (auto &a : x)
#define uid(a, b) uniform_int_distribution<int>(a, b)(rng)
#define len(x) (int)(x).size()
#define mp make_pair
#define pb push_back
#define F first
#define nl endl
#define S second
#define lb lower_bound
#define ub upper_bound
#define aint(x) x.begin(), x.end()
#define raint(x) x.rbegin(), x.rend()
#define ins insert
const int MOD = 1000000007;

int N,M;

void create_circuit(int m, vi A) {
  A.pb(0);
  N = A.size();M=m;
  vi C(M + 1,0),X,Y;

  vvi counters(M+1,vi());
  FOR(i,0,N-1){
    counters[A[i]].pb(A[i+1]);
  }

  int mx = 0;
  FOR(i,0,M+1){
    mx = max(mx,int(counters[i].size()));
  }
  counters[0].pb(A[0]);

  // FOR(i,0,M+1){
  //   cout << i << " {";
  //   for(int j:counters[i])cout<<j << " ,";
  //   cout<<"}"<<endl;
  // }

  // if(false){
  if(mx<=4){
    FOR(i,0,M+1){
      if(counters[i].size() == 1){
        C[i] = counters[i][0];
      }else if(counters[i].size() == 2){
        X.pb(counters[i][0]);
        Y.pb(counters[i][1]);
        C[i] = X.size()*-1;
      }else if(counters[i].size() == 3){
        int k = -X.size();
        C[i] = k-1;
        X.pb(k-2);
        Y.pb(k-3);
        X.pb(counters[i][0]);
        Y.pb(k-1);
        X.pb(counters[i][1]);
        Y.pb(counters[i][2]);
      }else if(counters[i].size() == 4){
        int k = -X.size();
        C[i] = k-1;
        X.pb(k-2);
        Y.pb(k-3);
        X.pb(counters[i][0]);
        Y.pb(counters[i][2]);
        X.pb(counters[i][1]);
        Y.pb(counters[i][3]);
      }
    }
    C[0] = A[0];

    // FOR(i,0,M+1)cout << C[i] << " ";
    // cout << endl;
    // FOR(i,0,X.size())cout << X[i] << " " << Y[i] << endl;

    answer(C, X, Y);
    return;
  }

  FOR(i,0,M+1){
    if(counters[i].size() == 0)continue;
    if(counters[i].size() == 1){
      C[i] = counters[i][0];
      continue;
    }
    if(counters[i].size() == 2){
      X.pb(counters[i][0]);
      Y.pb(counters[i][1]);
      C[i] = -X.size();
      continue;
    }

    int num = ceil(log2(counters[i].size()));

    // int k = -X.size();

    // cout << num << " " << pow(2,num) << endl;

    vi X1,Y1;

    C[i] = -1;
    int j = 0,sum = 2;
    while(sum < pow(2,num)){
      X1.pb(-2-j);
      j++;
      Y1.pb(-2-j);
      j++;
      sum+=2;
    }

    counters[i].insert(counters[i].end()-1,pow(2,num)-counters[i].size(),-1);

    // cout << i << " {";
    // for(int j:counters[i])cout<<j << " ,";
    // cout<<"}"<<endl;

    // cout << i << " " << counters[i].size() << " " << num << endl;

    vector<pair<string,int>> arr(pow(2,num));
    FOR(j,0,pow(2,num)){
      string a = "";
      int k = j;
      FOR(l,0,num){
        if(k%2 == 1)a += "1";
        else a += "0";
        k/=2;
      }
      // reverse(a.begin(),a.end());
      arr[j] = {a,j};
    }
    sort(arr.begin(),arr.end());

    for(int j = 0;j < pow(2,num);j+=2){
      if(arr[j].S < counters[i].size())
        X1.pb(counters[i][arr[j].S]);
      else 
        X1.pb(-1);

      if(arr[j+1].S < counters[i].size())
        Y1.pb(counters[i][arr[j+1].S]);
      else
        Y1.pb(-1);
    }
    // cout << endl;

    // cout << "INITIAL" << endl;
    // for(int x:X1)cout << x << " ";
    // cout << endl;
    // for(int y:Y1)cout << y << " ";
    // cout << endl;

    vi used(X1.size(),0);
    for(int j = X1.size()-1;j>-1;j--){
      // cout << j << " " << (j-1)/2 << endl;
      if(X1[j] != -1){
        used[j]++;
      }
      if(Y1[j] != -1){
        used[j]++;
      }
      if(used[j] == 0){
        if((j-1)/2 == 2*((j-1)/2)+1)X[(j-1)/2] = -1;
        else  Y[(j-1)/2] = -1;
      }
    }

    // cout << "TRYING TO SHORT " << endl;
    // for(int x:X1)cout << x << " ";
    // cout << endl;
    // for(int y:Y1)cout << y << " ";
    // cout << endl;
    // for(int y:used)cout << y << " ";
    // cout << endl;

    int k = -X.size();

    FOR(j,0,X1.size()){
      if(used[j]>0){
        X.pb(X1[j]+k);
        Y.pb(Y1[j]+k);
      }
    }
  }

  // cout << "FINAL" << endl;
  // for(int x:C)cout << x << " ";
  // cout << endl;
  // for(int x:X)cout << x << " ";
  // cout << endl;
  // for(int y:Y)cout << y << " ";
  // cout << endl;

  answer(C, X, Y);
}

Compilation message (stderr)

doll.cpp: In function 'void create_circuit(int, vi)':
doll.cpp:158:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  158 |       if(arr[j].S < counters[i].size())
doll.cpp:163:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  163 |       if(arr[j+1].S < counters[i].size())
doll.cpp:22:40: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 | #define FOR(i, a, b) for (int i = a; i < (b); i++)
      |                                        ^
doll.cpp:201:5: note: in expansion of macro 'FOR'
  201 |     FOR(j,0,X1.size()){
      |     ^~~

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