Submission #740454

#	Time	Username	Problem	Language	Result	Execution time	Memory
740454		danikoynov	Mechanical Doll (IOI18_doll)	C++14	6 / 100	107 ms	14896 KiB

doll

#include "doll.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;

const int maxn = 2e5 + 10;

int n, m;
vector < int > g[maxn];
vector < int > c, x, y;

struct state
{
    int dev, lf_child, rf_child;
    vector < int > fin;

    state()
    {
        dev = 0;
        lf_child = rf_child = -1;
        fin.clear();
    }
};

void create_node(int v)
{
    if (g[v].size() == 0)
        return;

        if (g[v].size() == 1)
        {
            c[v] = g[v][0];
            return;
        }
        int nec = 2, st = 0;
        while(nec < g[v].size())
            nec *= 2, st ++;
        ///cout << nec << " : " << st << endl;
        vector < state > gen;
        int sz = x.size();
        state it;
        it.dev = ++ sz;
        c[v] = -it.dev;
        it.fin.push_back(1);
        gen.push_back(it);
        for (int step = 0; step < st; step ++)
        {
            vector < state > new_gen;
            for (int i = 0; i < gen.size(); i ++)
            {
                state new_state;
                new_state.dev = ++ sz;
                gen[i].lf_child = - new_state.dev;
                for (int cur : gen[i].fin)
                    new_state.fin.push_back(cur * 2 - 1);
                new_gen.push_back(new_state);
                new_state = state();

                new_state.dev = ++ sz;
                gen[i].rf_child = - new_state.dev;
                for (int cur : gen[i].fin)
                    new_state.fin.push_back(cur * 2);
                new_gen.push_back(new_state);
            }
            for (state cur : gen)
            {
                x.push_back(cur.lf_child);
                y.push_back(cur.rf_child);
            }
            gen = new_gen;
        }
        ///cout << "fine" << endl;
        for (int i = 0; i < gen.size(); i ++)
        {
            ///cout << gen[i].fin.size() << endl;
            int lf_path = gen[i].fin[0] * 2 - 1, rf_path = gen[i].fin[0] * 2;
            ///cout << v << " :: " << lf_path << " : " << rf_path << endl;
            if (lf_path <= g[v].size())
                x.push_back(g[v][lf_path - 1]);
            else
                x.push_back(- it.dev);
            if (rf_path <= g[v].size())
                y.push_back(g[v][rf_path - 1]);
            else
                y.push_back(-it.dev);
        }
}
void create_circuit(int M, vector<int> A)
{
    n = A.size();
    m = M;

     c.resize(m + 1);
    g[0].push_back(A[0]);
    for (int i = 1; i < A.size(); i ++)
    {
        g[A[i - 1]].push_back(A[i]);
    }
    g[A.back()].push_back(0);
    for (int i = 0; i <= m; i ++)
    {
        create_node(i);
        continue;

    }
    /**for (int i = 0; i <= m; i ++)
        cout << c[i] << " ";
    cout << endl;
    for (int i = 0; i < x.size(); i ++)
        cout << x[i] << " " << y[i] << endl;*/
    answer(c, x, y);
}

Compilation message (stderr)

doll.cpp: In function 'void create_node(int)':
doll.cpp:27:5: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   27 |     if (g[v].size() == 0)
      |     ^~
doll.cpp:30:9: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   30 |         if (g[v].size() == 1)
      |         ^~
doll.cpp:36:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |         while(nec < g[v].size())
      |               ~~~~^~~~~~~~~~~~~
doll.cpp:49:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<state>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   49 |             for (int i = 0; i < gen.size(); i ++)
      |                             ~~^~~~~~~~~~~~
doll.cpp:73:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<state>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   73 |         for (int i = 0; i < gen.size(); i ++)
      |                         ~~^~~~~~~~~~~~
doll.cpp:78:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   78 |             if (lf_path <= g[v].size())
      |                 ~~~~~~~~^~~~~~~~~~~~~~
doll.cpp:82:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   82 |             if (rf_path <= g[v].size())
      |                 ~~~~~~~~^~~~~~~~~~~~~~
doll.cpp: In function 'void create_circuit(int, std::vector<int>)':
doll.cpp:95:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   95 |     for (int i = 1; i < A.size(); i ++)
      |                     ~~^~~~~~~~~~

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