oj.uz

Submission #790254

# Submission time Handle Problem Language Result Execution time Memory
790254 2023-07-22T13:27:53 Z Amylopectin Parachute rings (IOI12_rings) C++14
37 / 100
 915 ms 183960 KB 
#include <stdio.h>
#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;
const int mxn = 4e6 + 10;
// const int mxn = 110;
vector<int> pat[mxn] = {};
int n,ggr[mxn] = {},see[mxn] = {},deg[mxn] = {},inn[mxn] = {},rus,ruc
,thi[mxn] = {},cyc[mxn] = {},ocy,ret,u[mxn] = {},of;
int figr(int l)
{
  int cn = l,f;
  while(ggr[l] != l)
  {
    l = ggr[l];
  }
  while(ggr[cn] != cn)
  {
    f = ggr[cn];
    ggr[cn] = l;
    cn = f;
  }
  return l;
}
int mer(int l,int r)
{
  int f,cl = figr(l),cr = figr(r);
  if(cl > cr)
  {
    f = cl;
    cl = cr;
    cr = f;
  }
  ggr[cr] = cl;
  // nmem[cl] += nmem[cr];
  return cl;
}
int re(int cn,int be)
{
    int i,j,fn,fou = 0,cva;
    if(cyc[cn] == 1)
    {
        ocy = 1;
        ret = cn;
        return 1;
    }
    u[cn] = 1;
    for(i=0; i<pat[cn].size(); i++)
    {
        fn = pat[cn][i];
        if(fn == be)
        {
            continue;
        }
        if(u[fn] == 1)
        {
            fou = 1;
            break;
        }
        cva = re(fn,cn);
        if(cva == 1)
        {
            fou = 1;
            break;
        }
    }
    u[cn] = 0;
    if(fou == 1)
    {
        cyc[cn] = 1;
        if(thi[cn] == 1 || of == 1)
        {
            inn[ruc] = cn;
            ruc ++;
        }
    }
    return fou;
}
void Init(int nn)
{
    int i,j;
    n = nn;
    for(i=0; i<n; i++)
    {
        ggr[i] = i;
        see[i] = i;
        cyc[i] = 0;
    }
    rus = n;
}
void Link(int cl, int cr)
{
    int gl = figr(cl),gr = figr(cr),f,cru,cruc,i,j;
    pat[cl].push_back(cr);
    pat[cr].push_back(cl);
    deg[cl] ++;
    deg[cr] ++;
    mer(gl,gr);
    if(rus == 0)
    {
        return ;
    }
    ruc = 0;
    if(deg[cl] < deg[cr])
    {
        f = cl;
        cl = cr;
        cr = f;
        f = gl;
        gl = gr;
        gr = f;
    }
    if(deg[cl] > 3)
    {
            if(deg[cr] > 3)
            {
                rus = 0;
                return ;
            }
            else
            {
                ruc = 1;
                inn[0] = cl;
            }
    }
    else         
    {
        if(gl != gr)
        {
            if(deg[cl] > 3)
            {
                if(deg[cr] > 3)
                {
                    rus = 0;
                    return ;
                }
                else
                {
                    ruc = 1;
                    inn[0] = cl;
                }
            }
            else if(deg[cl] == 3)
            {
                if(deg[cr] == 3)
                {
                    ruc = 2;
                    inn[0] = cl;
                    inn[1] = cr;
                }
                else 
                {
                    for(i=0; i<3; i++)
                    {
                        inn[i] = pat[cl][i];
                    }
                    inn[3] = cl;
                    ruc = 4;
                }
            }
            else 
            {
                return ;
            }
        }
        else 
        {
            if(deg[cl] == 3)
            {
                if(deg[cr] == 3)
                {
                    ruc = 2;
                    inn[0] = cl;
                    inn[1] = cr;
                    for(i=0; i<2; i++)
                    {
                        for(j=0; j<2; j++)
                        {
                            if(pat[cl][i] == pat[cr][j])
                            {
                                ruc = 3;
                                inn[2] = pat[cl][i];
                            }
                        }
                    }
                }
                else 
                {
                    ruc = 0;
                    for(i=0; i<3; i++)
                    {
                        thi[pat[cl][i]] = 1;
                        if(cyc[pat[cl][i]] == 1)
                        {
                            inn[ruc] = pat[cl][i];
                            ruc ++;
                        }
                    }
                    if(cyc[cl] == 1)
                    {
                        inn[ruc] = cl;
                        ruc ++;
                    }
                    ocy = 0;
                    // inn[0] = cl;
                    
                    of = 0;
                    re(cr,cl);
                    if(ocy == 1)
                    {
                        re(cl,cr);
                    }
                    for(i=0; i<3; i++)
                    {
                        thi[pat[cl][i]] = 0;
                    }
                }
            }
            else 
            {
                // inn[0] = cr;


                ocy = 0;
                ruc = 0;
                of = 1;
                re(cr,cl);
                if(ocy == 1)
                {
                    inn[0] = ret;
                    ruc = 1;
                    re(cl,cr);
                    if(ret != inn[0])
                    {
                        inn[1] = ret;
                        ruc = 2;
                    }
                }
            }
        }
    }
    sort(inn,inn+ruc);
    cru = 0;
    cruc = 0;
    for(i=0; i<rus; i++)
    {
        while(cruc < ruc && see[i] > inn[cruc])
        {
            cruc ++;
        }
        if(cruc < ruc && see[i] == inn[cruc])
        {
            see[cru] = see[i];
            cru ++;
        }
    }
    rus = cru;
    return ;
}

int CountCritical()
{
    return rus;
}

Compilation message

rings.cpp: In function 'int re(int, int)':
rings.cpp:49:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   49 |     for(i=0; i<pat[cn].size(); i++)
      |              ~^~~~~~~~~~~~~~~
rings.cpp:41:11: warning: unused variable 'j' [-Wunused-variable]
   41 |     int i,j,fn,fou = 0,cva;
      |           ^
rings.cpp: In function 'void Init(int)':
rings.cpp:82:11: warning: unused variable 'j' [-Wunused-variable]
   82 |     int i,j;
      |           ^

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 44 ms 94164 KB Output is correct
2 Correct 45 ms 94420 KB Output is correct
3 Correct 45 ms 94468 KB Output is correct
4 Correct 45 ms 94332 KB Output is correct
5 Correct 45 ms 94564 KB Output is correct
6 Correct 45 ms 94816 KB Output is correct
7 Correct 44 ms 94284 KB Output is correct
8 Correct 46 ms 94512 KB Output is correct
9 Correct 45 ms 94444 KB Output is correct
10 Correct 45 ms 94500 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 277 ms 118708 KB Output is correct
2 Correct 558 ms 131776 KB Output is correct
3 Correct 683 ms 137168 KB Output is correct
4 Correct 721 ms 142788 KB Output is correct
5 Correct 751 ms 146756 KB Output is correct
6 Correct 915 ms 183960 KB Output is correct
7 Correct 644 ms 136692 KB Output is correct
8 Correct 667 ms 138108 KB Output is correct
9 Correct 709 ms 141072 KB Output is correct
10 Correct 525 ms 143844 KB Output is correct

Subtask #3
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 44 ms 94164 KB Output is correct
2 Correct 45 ms 94420 KB Output is correct
3 Correct 45 ms 94468 KB Output is correct
4 Correct 45 ms 94332 KB Output is correct
5 Correct 45 ms 94564 KB Output is correct
6 Correct 45 ms 94816 KB Output is correct
7 Correct 44 ms 94284 KB Output is correct
8 Correct 46 ms 94512 KB Output is correct
9 Correct 45 ms 94444 KB Output is correct
10 Correct 45 ms 94500 KB Output is correct
11 Incorrect 44 ms 94496 KB Output isn't correct
12 Halted 0 ms 0 KB -

Subtask #4
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 44 ms 94164 KB Output is correct
2 Correct 45 ms 94420 KB Output is correct
3 Correct 45 ms 94468 KB Output is correct
4 Correct 45 ms 94332 KB Output is correct
5 Correct 45 ms 94564 KB Output is correct
6 Correct 45 ms 94816 KB Output is correct
7 Correct 44 ms 94284 KB Output is correct
8 Correct 46 ms 94512 KB Output is correct
9 Correct 45 ms 94444 KB Output is correct
10 Correct 45 ms 94500 KB Output is correct
11 Incorrect 44 ms 94496 KB Output isn't correct
12 Halted 0 ms 0 KB -

Subtask #5
0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 44 ms 94164 KB Output is correct
2 Correct 45 ms 94420 KB Output is correct
3 Correct 45 ms 94468 KB Output is correct
4 Correct 45 ms 94332 KB Output is correct
5 Correct 45 ms 94564 KB Output is correct
6 Correct 45 ms 94816 KB Output is correct
7 Correct 44 ms 94284 KB Output is correct
8 Correct 46 ms 94512 KB Output is correct
9 Correct 45 ms 94444 KB Output is correct
10 Correct 45 ms 94500 KB Output is correct
11 Correct 277 ms 118708 KB Output is correct
12 Correct 558 ms 131776 KB Output is correct
13 Correct 683 ms 137168 KB Output is correct
14 Correct 721 ms 142788 KB Output is correct
15 Correct 751 ms 146756 KB Output is correct
16 Correct 915 ms 183960 KB Output is correct
17 Correct 644 ms 136692 KB Output is correct
18 Correct 667 ms 138108 KB Output is correct
19 Correct 709 ms 141072 KB Output is correct
20 Correct 525 ms 143844 KB Output is correct
21 Incorrect 44 ms 94496 KB Output isn't correct
22 Halted 0 ms 0 KB -