oj.uz

Submission #92600

# Submission time Handle Problem Language Result Execution time Memory
92600 2019-01-03T21:10:00 Z Bodo171 Cats or Dogs (JOI18_catdog) C++14
100 / 100
 338 ms 93684 KB 
#include "catdog.h"
#include <iostream>
using namespace std;
const int nmax=100005;
vector<int> v[nmax];
int wh[nmax],path[nmax],fail[nmax],w[nmax],big[nmax],ce[nmax],E[nmax];
int sum_sons[nmax][2];
int aux[5],value[5];
int x,n,paths;
struct mat
{
    int m[2][2];
}zr,mare;
void mrg(mat &A,mat B,mat C)
{
    for(int i1=0;i1<2;i1++)
      for(int i2=0;i2<2;i2++)
         A.m[i1][i2]=2*n;
    for(int i1=0;i1<2;i1++)
        for(int m1=0;m1<2;m1++)
           for(int m2=0;m2<2;m2++)
             for(int i2=0;i2<2;i2++)
                    A.m[i1][i2]=min(A.m[i1][i2],B.m[i1][m1]+C.m[m2][i2]+(m1^m2));
}
struct path
{
    int nodes;
    vector<mat> arb;
    void ins(int x)
    {
        wh[x]=++nodes;
    }
    void ini()
    {
        arb.resize(4*nodes+50);
        for(int idx=0;idx<arb.size();idx++)
            arb[idx]=mare;
    }
    void update(int nod,int l,int r,int x,int val)
    {
        if(l==r)
        {
            for(int i=0;i<2;i++)
                for(int j=0;j<2;j++)
                  arb[nod].m[i][j]=2*n;
            if(val==2)
            {
                arb[nod].m[0][0]=sum_sons[x][0];
                arb[nod].m[1][1]=sum_sons[x][1];
            }
            else
            {
                arb[nod].m[val][val]=sum_sons[x][val];
            }
            return;
        }
        int m=(l+r)/2;
        if(wh[x]<=m) update(2*nod,l,m,x,val);
        else update(2*nod+1,m+1,r,x,val);
        mrg(arb[nod],arb[2*nod],arb[2*nod+1]);
    }

    int mincost()
    {
        int ret=2*n;
        for(int i=0;i<2;i++)
            for(int j=0;j<2;j++)
               ret=min(ret,arb[1].m[i][j]);
       return ret;
    }
}P[nmax];
int min_col(mat cv,int wh)
{
    int ret=2*n;
    for(int ii=0; ii<2; ii++)
        ret=min(ret,cv.m[ii][wh]);
    return ret;
}
void dfs(int x)
{
    w[x]=1;
    for(int i=0;i<v[x].size();i++)
        if(!w[v[x][i]])
    {
        dfs(v[x][i]);
        w[x]+=w[v[x][i]];
        if(w[v[x][i]]>w[big[x]])
        {
            big[x]=v[x][i];
        }
    }
    if(!big[x]) path[x]=++paths;
    else path[x]=path[big[x]];
    P[path[x]].ins(x);
    for(int i=0;i<v[x].size();i++)
        if(v[x][i]!=big[x])
    {
        fail[path[v[x][i]]]=x;
    }
}
void upd(int x,int val)
{
    int unde=0;
    ce[x]=val;
    while(x)
    {
        unde=path[x];
        for(int i=0;i<2;i++)
            aux[i]=0;
        if(E[path[x]])
         for(int i=0;i<2;i++)
           aux[i]=min_col(P[unde].arb[1],i);
        aux[0]=min(aux[1]+1,aux[0]);
        aux[1]=min(aux[0]+1,aux[1]);
        E[path[x]]=1;
        P[path[x]].update(1,1,P[path[x]].nodes,x,ce[x]);
        for(int i=0;i<2;i++)
           value[i]=min_col(P[unde].arb[1],i);
        value[0]=min(value[1]+1,value[0]);
        value[1]=min(value[0]+1,value[1]);
        x=fail[path[x]];
        for(int i=0;i<2;i++)
            sum_sons[x][i]+=value[i]-aux[i];
    }
}
void initialize(int N, vector<int> A, vector<int> B) {
  x = A.size();n=N;
  for(int i=0;i<N-1;i++)
  {
      v[A[i]].push_back(B[i]);
      v[B[i]].push_back(A[i]);
  }
  for(int i=0;i<2;i++)
    for(int j=0;j<2;j++)
      mare.m[i][j]=2*n;
  dfs(1);
  for(int i=1;i<=paths;i++)
    P[i].ini();
  for(int i=1;i<=n;i++)
    ce[i]=2;
  for(int nod=1;nod<=n;nod++)
    upd(nod,2);
}

int cat(int v) {
  upd(v,0);
  return P[path[1]].mincost();
}

int dog(int v) {
  upd(v,1);
  return P[path[1]].mincost();
}

int neighbor(int v) {
  upd(v,2);
  return P[path[1]].mincost();
}

Compilation message

catdog.cpp: In member function 'void path::ini()':
catdog.cpp:36:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int idx=0;idx<arb.size();idx++)
                       ~~~^~~~~~~~~~~
catdog.cpp: In function 'void dfs(int)':
catdog.cpp:82:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<v[x].size();i++)
                 ~^~~~~~~~~~~~
catdog.cpp:95:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<v[x].size();i++)
                 ~^~~~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 5852 KB Output is correct
2 Correct 6 ms 5880 KB Output is correct
3 Correct 6 ms 5880 KB Output is correct
4 Correct 6 ms 5884 KB Output is correct
5 Correct 6 ms 5880 KB Output is correct
6 Correct 6 ms 5880 KB Output is correct
7 Correct 6 ms 5884 KB Output is correct
8 Correct 6 ms 5880 KB Output is correct
9 Correct 6 ms 5852 KB Output is correct
10 Correct 6 ms 5880 KB Output is correct
11 Correct 6 ms 5880 KB Output is correct
12 Correct 6 ms 5880 KB Output is correct
13 Correct 6 ms 5880 KB Output is correct
14 Correct 6 ms 5880 KB Output is correct
15 Correct 6 ms 5880 KB Output is correct
16 Correct 6 ms 5880 KB Output is correct

Subtask #2
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 5852 KB Output is correct
2 Correct 6 ms 5880 KB Output is correct
3 Correct 6 ms 5880 KB Output is correct
4 Correct 6 ms 5884 KB Output is correct
5 Correct 6 ms 5880 KB Output is correct
6 Correct 6 ms 5880 KB Output is correct
7 Correct 6 ms 5884 KB Output is correct
8 Correct 6 ms 5880 KB Output is correct
9 Correct 6 ms 5852 KB Output is correct
10 Correct 6 ms 5880 KB Output is correct
11 Correct 6 ms 5880 KB Output is correct
12 Correct 6 ms 5880 KB Output is correct
13 Correct 6 ms 5880 KB Output is correct
14 Correct 6 ms 5880 KB Output is correct
15 Correct 6 ms 5880 KB Output is correct
16 Correct 6 ms 5880 KB Output is correct
17 Correct 7 ms 6236 KB Output is correct
18 Correct 8 ms 6392 KB Output is correct
19 Correct 7 ms 6136 KB Output is correct
20 Correct 6 ms 6008 KB Output is correct
21 Correct 7 ms 6056 KB Output is correct
22 Correct 7 ms 6008 KB Output is correct
23 Correct 8 ms 6264 KB Output is correct
24 Correct 7 ms 6264 KB Output is correct
25 Correct 7 ms 6008 KB Output is correct
26 Correct 7 ms 6008 KB Output is correct
27 Correct 6 ms 5880 KB Output is correct
28 Correct 6 ms 6008 KB Output is correct
29 Correct 7 ms 6136 KB Output is correct
30 Correct 6 ms 6008 KB Output is correct
31 Correct 8 ms 6648 KB Output is correct
32 Correct 7 ms 6136 KB Output is correct

Subtask #3
62.0 / 62.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 5852 KB Output is correct
2 Correct 6 ms 5880 KB Output is correct
3 Correct 6 ms 5880 KB Output is correct
4 Correct 6 ms 5884 KB Output is correct
5 Correct 6 ms 5880 KB Output is correct
6 Correct 6 ms 5880 KB Output is correct
7 Correct 6 ms 5884 KB Output is correct
8 Correct 6 ms 5880 KB Output is correct
9 Correct 6 ms 5852 KB Output is correct
10 Correct 6 ms 5880 KB Output is correct
11 Correct 6 ms 5880 KB Output is correct
12 Correct 6 ms 5880 KB Output is correct
13 Correct 6 ms 5880 KB Output is correct
14 Correct 6 ms 5880 KB Output is correct
15 Correct 6 ms 5880 KB Output is correct
16 Correct 6 ms 5880 KB Output is correct
17 Correct 7 ms 6236 KB Output is correct
18 Correct 8 ms 6392 KB Output is correct
19 Correct 7 ms 6136 KB Output is correct
20 Correct 6 ms 6008 KB Output is correct
21 Correct 7 ms 6056 KB Output is correct
22 Correct 7 ms 6008 KB Output is correct
23 Correct 8 ms 6264 KB Output is correct
24 Correct 7 ms 6264 KB Output is correct
25 Correct 7 ms 6008 KB Output is correct
26 Correct 7 ms 6008 KB Output is correct
27 Correct 6 ms 5880 KB Output is correct
28 Correct 6 ms 6008 KB Output is correct
29 Correct 7 ms 6136 KB Output is correct
30 Correct 6 ms 6008 KB Output is correct
31 Correct 8 ms 6648 KB Output is correct
32 Correct 7 ms 6136 KB Output is correct
33 Correct 170 ms 31332 KB Output is correct
34 Correct 139 ms 37112 KB Output is correct
35 Correct 138 ms 23384 KB Output is correct
36 Correct 312 ms 50028 KB Output is correct
37 Correct 68 ms 20216 KB Output is correct
38 Correct 314 ms 55140 KB Output is correct
39 Correct 308 ms 55524 KB Output is correct
40 Correct 308 ms 55400 KB Output is correct
41 Correct 330 ms 55268 KB Output is correct
42 Correct 311 ms 55144 KB Output is correct
43 Correct 305 ms 55288 KB Output is correct
44 Correct 312 ms 55272 KB Output is correct
45 Correct 309 ms 55396 KB Output is correct
46 Correct 326 ms 55396 KB Output is correct
47 Correct 338 ms 55396 KB Output is correct
48 Correct 171 ms 74560 KB Output is correct
49 Correct 222 ms 93684 KB Output is correct
50 Correct 46 ms 22776 KB Output is correct
51 Correct 77 ms 39800 KB Output is correct
52 Correct 48 ms 23388 KB Output is correct
53 Correct 230 ms 53752 KB Output is correct
54 Correct 111 ms 26232 KB Output is correct
55 Correct 260 ms 39492 KB Output is correct
56 Correct 140 ms 28120 KB Output is correct
57 Correct 240 ms 49676 KB Output is correct
58 Correct 68 ms 45556 KB Output is correct
59 Correct 62 ms 36216 KB Output is correct
60 Correct 158 ms 83056 KB Output is correct
61 Correct 202 ms 86084 KB Output is correct
62 Correct 154 ms 71664 KB Output is correct
63 Correct 87 ms 15864 KB Output is correct
64 Correct 82 ms 17528 KB Output is correct
65 Correct 154 ms 24440 KB Output is correct
66 Correct 63 ms 10744 KB Output is correct
67 Correct 104 ms 18936 KB Output is correct
68 Correct 191 ms 24952 KB Output is correct
69 Correct 30 ms 7676 KB Output is correct
70 Correct 11 ms 6136 KB Output is correct
71 Correct 75 ms 14372 KB Output is correct
72 Correct 123 ms 21384 KB Output is correct
73 Correct 226 ms 27768 KB Output is correct
74 Correct 251 ms 24824 KB Output is correct
75 Correct 195 ms 27644 KB Output is correct
76 Correct 208 ms 26744 KB Output is correct
77 Correct 232 ms 25208 KB Output is correct