oj.uz

Submission #65397

# Submission time Handle Problem Language Result Execution time Memory
65397 2018-08-07T13:54:43 Z Bodo171 Parachute rings (IOI12_rings) C++14
55 / 100
 3190 ms 169964 KB 
#include <iostream>
#include <vector>
using namespace std;
const int nmax=1000*1000+5;
int n;
pair<int,int> muchii[nmax];
vector<int> v[nmax];
int grad[nmax],special[nmax],valid[nmax];
int nodspecial[10],auxiliare[10];
int maimari,busit,mme,gradmx,speciale,nr,auxi;
struct dsu
{
    int tt[nmax],rg[nmax];
    void ini()
    {
        for(int i=0;i<n;i++)
            tt[i]=i,rg[i]=1;
    }
    int finds(int x)
    {
        int y=x,aux=0;
        while(x!=tt[x])
            x=tt[x];
        while(y!=x)
        {
            aux=tt[y];
            tt[y]=x;
            y=aux;
        }
        return x;
    }
    void unite(int A,int B)
    {
        if(A==B) return;
        if(rg[A]>rg[B]) {tt[B]=A;rg[A]+=rg[B];}
        else {tt[A]=B;rg[B]+=rg[A];}
    }
};
struct linker
{
    dsu dsu1;
    int ciclu,wciclu,mxout,gr[nmax];
    void uneste(int x,int y)
    {
        gr[x]++;gr[y]++;
        if(gr[x]>mxout) mxout=gr[x];
        if(gr[y]>mxout) mxout=gr[y];
        if(dsu1.finds(x)==dsu1.finds(y))
            ciclu+=1,wciclu=dsu1.rg[dsu1.finds(x)];
        else dsu1.unite(dsu1.finds(x),dsu1.finds(y));
    }
}li[7],aux[10];
void rezolva(int x)
{
    if(grad[x]>=3||(valid[x])) return;
    for(int i=0;i<v[x].size();i++)
            if(grad[v[x][i]]==3)
        {
            valid[x]=1;
        }
    if(!valid[x]) return;
    auxi++;
    auxiliare[auxi]=x;
    aux[auxi].dsu1.ini();
    for(int i=1;i<=nr;i++)
        if(muchii[i].first!=x&&muchii[i].second!=x)
            aux[auxi].uneste(muchii[i].first,muchii[i].second);
}
void spec(int x)
{
    if(grad[x]==4)
    {
        maimari++;
        if(maimari>1)
        {
            busit=1;
            return;
        }
    }
    if(grad[x]>=gradmx&&grad[x]>=3)
    {
        if(grad[x]==gradmx)
        {
            speciale++;
        }
        else
        {
            speciale=1;
            gradmx=grad[x];
        }
        nodspecial[speciale]=x;
         li[speciale].dsu1.ini();
         if(special[x]!=speciale)
         {
         li[speciale].mxout=0;li[speciale].ciclu=0;li[speciale].wciclu=0;
         for(int i=1;i<=nr;i++)
             if(muchii[i].first!=x&&muchii[i].second!=x)
                 li[speciale].uneste(muchii[i].first,muchii[i].second);
          special[x]=speciale;
         }
    }
    if(gradmx==3&&speciale>4)
    {
        busit=1;
    }
      if(gradmx==3&&speciale<3)
    {
        for(int i=0;i<v[x].size();i++)
            rezolva(v[x][i]);
    }
}
void Init(int N_) {

  n = N_;
  li[0].dsu1.ini();

}

void Link(int A, int B) {
    if(busit) return;

    grad[A]++;
    grad[B]++;
    v[A].push_back(B);
    v[B].push_back(A);
    spec(A);
    spec(B);
    muchii[++nr]={A,B};
    for(int i=0;i<=speciale;i++)
        if(i==0||(nodspecial[i]!=A&&nodspecial[i]!=B))
           li[i].uneste(A,B);
    if(gradmx==3&&speciale<=2)
        for(int i=1;i<=auxi;i++)
          if(auxiliare[i]!=A&&auxiliare[i]!=B)
              aux[i].uneste(A,B);
}

int CountCritical() {
  if(busit)
  {
      return 0;
  }
  if(gradmx<3)
  {
      if(li[0].ciclu>1)
      {
          busit=1;
          return 0;
      }
      if(li[0].ciclu==1)
        return li[0].wciclu;
      return n;
  }
  int ret=0;
  for(int i=1;i<=speciale;i++)
  {
    if((!li[i].ciclu)&&li[i].mxout<3)
        ret++;
  }
  if(gradmx==3&&speciale<=2)
  {
      for(int i=1;i<=auxi;i++)
        if((!aux[i].ciclu)&&aux[i].mxout<3&&(!special[auxiliare[i]]))
             ret++;
  }
  if(ret==0) busit=1;
  return ret;

}

Compilation message

rings.cpp: In function 'void rezolva(int)':
rings.cpp:56:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<v[x].size();i++)
                 ~^~~~~~~~~~~~
rings.cpp: In function 'void spec(int)':
rings.cpp:108:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int i=0;i<v[x].size();i++)
                     ~^~~~~~~~~~~~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 23800 KB Output is correct
2 Correct 25 ms 24436 KB Output is correct
3 Correct 26 ms 24640 KB Output is correct
4 Correct 24 ms 24640 KB Output is correct
5 Correct 24 ms 24640 KB Output is correct
6 Correct 25 ms 24640 KB Output is correct
7 Correct 23 ms 25116 KB Output is correct
8 Correct 23 ms 25116 KB Output is correct
9 Correct 26 ms 25116 KB Output is correct
10 Correct 26 ms 25172 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 494 ms 52576 KB Output is correct
2 Correct 1272 ms 105580 KB Output is correct
3 Correct 447 ms 147180 KB Output is correct
4 Correct 1334 ms 147180 KB Output is correct
5 Correct 1300 ms 147180 KB Output is correct
6 Correct 1278 ms 147180 KB Output is correct
7 Correct 496 ms 169964 KB Output is correct
8 Correct 3190 ms 169964 KB Output is correct
9 Correct 2673 ms 169964 KB Output is correct
10 Correct 979 ms 169964 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 23800 KB Output is correct
2 Correct 25 ms 24436 KB Output is correct
3 Correct 26 ms 24640 KB Output is correct
4 Correct 24 ms 24640 KB Output is correct
5 Correct 24 ms 24640 KB Output is correct
6 Correct 25 ms 24640 KB Output is correct
7 Correct 23 ms 25116 KB Output is correct
8 Correct 23 ms 25116 KB Output is correct
9 Correct 26 ms 25116 KB Output is correct
10 Correct 26 ms 25172 KB Output is correct
11 Correct 26 ms 169964 KB Output is correct
12 Correct 35 ms 169964 KB Output is correct
13 Correct 30 ms 169964 KB Output is correct
14 Correct 56 ms 169964 KB Output is correct
15 Correct 135 ms 169964 KB Output is correct
16 Correct 27 ms 169964 KB Output is correct
17 Correct 26 ms 169964 KB Output is correct
18 Correct 27 ms 169964 KB Output is correct
19 Correct 26 ms 169964 KB Output is correct
20 Correct 32 ms 169964 KB Output is correct

Subtask #4
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 23800 KB Output is correct
2 Correct 25 ms 24436 KB Output is correct
3 Correct 26 ms 24640 KB Output is correct
4 Correct 24 ms 24640 KB Output is correct
5 Correct 24 ms 24640 KB Output is correct
6 Correct 25 ms 24640 KB Output is correct
7 Correct 23 ms 25116 KB Output is correct
8 Correct 23 ms 25116 KB Output is correct
9 Correct 26 ms 25116 KB Output is correct
10 Correct 26 ms 25172 KB Output is correct
11 Correct 26 ms 169964 KB Output is correct
12 Correct 35 ms 169964 KB Output is correct
13 Correct 30 ms 169964 KB Output is correct
14 Correct 56 ms 169964 KB Output is correct
15 Correct 135 ms 169964 KB Output is correct
16 Correct 27 ms 169964 KB Output is correct
17 Correct 26 ms 169964 KB Output is correct
18 Correct 27 ms 169964 KB Output is correct
19 Correct 26 ms 169964 KB Output is correct
20 Correct 32 ms 169964 KB Output is correct
21 Correct 43 ms 169964 KB Output is correct
22 Correct 62 ms 169964 KB Output is correct
23 Correct 71 ms 169964 KB Output is correct
24 Correct 2221 ms 169964 KB Output is correct
25 Correct 741 ms 169964 KB Output is correct
26 Incorrect 123 ms 169964 KB Output isn't correct
27 Halted 0 ms 0 KB -

Subtask #5
0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 23800 KB Output is correct
2 Correct 25 ms 24436 KB Output is correct
3 Correct 26 ms 24640 KB Output is correct
4 Correct 24 ms 24640 KB Output is correct
5 Correct 24 ms 24640 KB Output is correct
6 Correct 25 ms 24640 KB Output is correct
7 Correct 23 ms 25116 KB Output is correct
8 Correct 23 ms 25116 KB Output is correct
9 Correct 26 ms 25116 KB Output is correct
10 Correct 26 ms 25172 KB Output is correct
11 Correct 494 ms 52576 KB Output is correct
12 Correct 1272 ms 105580 KB Output is correct
13 Correct 447 ms 147180 KB Output is correct
14 Correct 1334 ms 147180 KB Output is correct
15 Correct 1300 ms 147180 KB Output is correct
16 Correct 1278 ms 147180 KB Output is correct
17 Correct 496 ms 169964 KB Output is correct
18 Correct 3190 ms 169964 KB Output is correct
19 Correct 2673 ms 169964 KB Output is correct
20 Correct 979 ms 169964 KB Output is correct
21 Correct 26 ms 169964 KB Output is correct
22 Correct 35 ms 169964 KB Output is correct
23 Correct 30 ms 169964 KB Output is correct
24 Correct 56 ms 169964 KB Output is correct
25 Correct 135 ms 169964 KB Output is correct
26 Correct 27 ms 169964 KB Output is correct
27 Correct 26 ms 169964 KB Output is correct
28 Correct 27 ms 169964 KB Output is correct
29 Correct 26 ms 169964 KB Output is correct
30 Correct 32 ms 169964 KB Output is correct
31 Correct 43 ms 169964 KB Output is correct
32 Correct 62 ms 169964 KB Output is correct
33 Correct 71 ms 169964 KB Output is correct
34 Correct 2221 ms 169964 KB Output is correct
35 Correct 741 ms 169964 KB Output is correct
36 Incorrect 123 ms 169964 KB Output isn't correct
37 Halted 0 ms 0 KB -