oj.uz

Submission #65398

# Submission time Handle Problem Language Result Execution time Memory
65398 2018-08-07T14:00:51 Z Bodo171 Parachute rings (IOI12_rings) C++14
100 / 100
 3173 ms 169952 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;

         if(special[x]!=speciale)
         {
         li[speciale].mxout=0;li[speciale].ciclu=0;li[speciale].wciclu=0;
          li[speciale].dsu1.ini();
          for(int i=0;i<n;i++)
            li[speciale].gr[i]=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:111:22: 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 24684 KB Output is correct
4 Correct 22 ms 24684 KB Output is correct
5 Correct 22 ms 24684 KB Output is correct
6 Correct 24 ms 24684 KB Output is correct
7 Correct 24 ms 25180 KB Output is correct
8 Correct 28 ms 25180 KB Output is correct
9 Correct 28 ms 25180 KB Output is correct
10 Correct 27 ms 25180 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 532 ms 52664 KB Output is correct
2 Correct 1351 ms 105680 KB Output is correct
3 Correct 497 ms 147040 KB Output is correct
4 Correct 1459 ms 147040 KB Output is correct
5 Correct 1379 ms 147040 KB Output is correct
6 Correct 1278 ms 147040 KB Output is correct
7 Correct 447 ms 169952 KB Output is correct
8 Correct 3173 ms 169952 KB Output is correct
9 Correct 2682 ms 169952 KB Output is correct
10 Correct 959 ms 169952 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 24684 KB Output is correct
4 Correct 22 ms 24684 KB Output is correct
5 Correct 22 ms 24684 KB Output is correct
6 Correct 24 ms 24684 KB Output is correct
7 Correct 24 ms 25180 KB Output is correct
8 Correct 28 ms 25180 KB Output is correct
9 Correct 28 ms 25180 KB Output is correct
10 Correct 27 ms 25180 KB Output is correct
11 Correct 26 ms 169952 KB Output is correct
12 Correct 32 ms 169952 KB Output is correct
13 Correct 30 ms 169952 KB Output is correct
14 Correct 28 ms 169952 KB Output is correct
15 Correct 28 ms 169952 KB Output is correct
16 Correct 28 ms 169952 KB Output is correct
17 Correct 30 ms 169952 KB Output is correct
18 Correct 28 ms 169952 KB Output is correct
19 Correct 28 ms 169952 KB Output is correct
20 Correct 32 ms 169952 KB Output is correct

Subtask #4
14.0 / 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 24684 KB Output is correct
4 Correct 22 ms 24684 KB Output is correct
5 Correct 22 ms 24684 KB Output is correct
6 Correct 24 ms 24684 KB Output is correct
7 Correct 24 ms 25180 KB Output is correct
8 Correct 28 ms 25180 KB Output is correct
9 Correct 28 ms 25180 KB Output is correct
10 Correct 27 ms 25180 KB Output is correct
11 Correct 26 ms 169952 KB Output is correct
12 Correct 32 ms 169952 KB Output is correct
13 Correct 30 ms 169952 KB Output is correct
14 Correct 28 ms 169952 KB Output is correct
15 Correct 28 ms 169952 KB Output is correct
16 Correct 28 ms 169952 KB Output is correct
17 Correct 30 ms 169952 KB Output is correct
18 Correct 28 ms 169952 KB Output is correct
19 Correct 28 ms 169952 KB Output is correct
20 Correct 32 ms 169952 KB Output is correct
21 Correct 48 ms 169952 KB Output is correct
22 Correct 62 ms 169952 KB Output is correct
23 Correct 75 ms 169952 KB Output is correct
24 Correct 75 ms 169952 KB Output is correct
25 Correct 41 ms 169952 KB Output is correct
26 Correct 79 ms 169952 KB Output is correct
27 Correct 77 ms 169952 KB Output is correct
28 Correct 56 ms 169952 KB Output is correct
29 Correct 58 ms 169952 KB Output is correct
30 Correct 97 ms 169952 KB Output is correct

Subtask #5
31.0 / 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 24684 KB Output is correct
4 Correct 22 ms 24684 KB Output is correct
5 Correct 22 ms 24684 KB Output is correct
6 Correct 24 ms 24684 KB Output is correct
7 Correct 24 ms 25180 KB Output is correct
8 Correct 28 ms 25180 KB Output is correct
9 Correct 28 ms 25180 KB Output is correct
10 Correct 27 ms 25180 KB Output is correct
11 Correct 532 ms 52664 KB Output is correct
12 Correct 1351 ms 105680 KB Output is correct
13 Correct 497 ms 147040 KB Output is correct
14 Correct 1459 ms 147040 KB Output is correct
15 Correct 1379 ms 147040 KB Output is correct
16 Correct 1278 ms 147040 KB Output is correct
17 Correct 447 ms 169952 KB Output is correct
18 Correct 3173 ms 169952 KB Output is correct
19 Correct 2682 ms 169952 KB Output is correct
20 Correct 959 ms 169952 KB Output is correct
21 Correct 26 ms 169952 KB Output is correct
22 Correct 32 ms 169952 KB Output is correct
23 Correct 30 ms 169952 KB Output is correct
24 Correct 28 ms 169952 KB Output is correct
25 Correct 28 ms 169952 KB Output is correct
26 Correct 28 ms 169952 KB Output is correct
27 Correct 30 ms 169952 KB Output is correct
28 Correct 28 ms 169952 KB Output is correct
29 Correct 28 ms 169952 KB Output is correct
30 Correct 32 ms 169952 KB Output is correct
31 Correct 48 ms 169952 KB Output is correct
32 Correct 62 ms 169952 KB Output is correct
33 Correct 75 ms 169952 KB Output is correct
34 Correct 75 ms 169952 KB Output is correct
35 Correct 41 ms 169952 KB Output is correct
36 Correct 79 ms 169952 KB Output is correct
37 Correct 77 ms 169952 KB Output is correct
38 Correct 56 ms 169952 KB Output is correct
39 Correct 58 ms 169952 KB Output is correct
40 Correct 97 ms 169952 KB Output is correct
41 Correct 278 ms 169952 KB Output is correct
42 Correct 831 ms 169952 KB Output is correct
43 Correct 337 ms 169952 KB Output is correct
44 Correct 399 ms 169952 KB Output is correct
45 Correct 723 ms 169952 KB Output is correct
46 Correct 885 ms 169952 KB Output is correct
47 Correct 1128 ms 169952 KB Output is correct
48 Correct 373 ms 169952 KB Output is correct
49 Correct 834 ms 169952 KB Output is correct
50 Correct 903 ms 169952 KB Output is correct
51 Correct 394 ms 169952 KB Output is correct
52 Correct 351 ms 169952 KB Output is correct
53 Correct 352 ms 169952 KB Output is correct
54 Correct 3034 ms 169952 KB Output is correct
55 Correct 1442 ms 169952 KB Output is correct