oj.uz

답안 #66486

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
66486 2018-08-10T21:40:45 Z Bodo171 열대 식물원 (Tropical Garden) (IOI11_garden) C++14
100 / 100
 3151 ms 40940 KB 
#include "garden.h"
#include "gardenlib.h"
#include <vector>
#include <iostream>
using namespace std;
const int nmax=300005;
int i,nod,old,state,oldstate,nr,x,nxt,cycles,sz1,sz2,j;
vector<int> v[2*nmax];
int p[nmax][2],mare[nmax];
int viz[2*nmax],dist[2][2*nmax],st[2*nmax],cyc[nmax],sz[2*nmax],rel[nmax];
void link_(int A,int B)
{
    if(p[A][0]==-1) p[A][0]=B;
    else if(p[A][1]==-1) p[A][1]=B;
    if(mare[A]==-1) mare[A]=B;
}
void dfs(int B,int x)
{
    for(int i=0;i<v[x].size();i++)
        if(!dist[B][v[x][i]])
    {
        dist[B][v[x][i]]=dist[B][x]+1;
        dfs(B,v[x][i]);
    }
}
void count_routes(int N, int M, int P, int R[][2], int Q, int G[])
{
  for(i=0;i<N;i++)
    p[i][0]=p[i][1]=mare[i]=-1;
  for(i=0;i<M;i++)
  {
     link_(R[i][0],R[i][1]);
     link_(R[i][1],R[i][0]);
  }
  for(i=0;i<N;i++)
    if(p[i][1]==-1)
       mare[i]=N+1;
  for(nod=0;nod<N;nod++)
    if(!viz[2*nod])
  {
      x=nod;old=-1;state=2*N;nr=0;oldstate=-1;
      while(!viz[x*2+(old==mare[x])])
      {
          state=x*2+(old==mare[x]);
          st[++nr]=state;
          if(oldstate!=-1)v[state].push_back(oldstate);
          if(old==mare[x]&&p[x][1]!=-1) x=p[x][1];
          else x=p[x][0];
          old=state/2;
          viz[state]=1;
          oldstate=state;
      }
      st[nr+1]=x*2+(old==mare[x]);
      if(nr)v[st[nr+1]].push_back(st[nr]);
      if(cyc[st[nr+1]])
         for(i=nr;i>=1;i--)
        {
            x=st[i];nxt=st[i+1];
            cyc[x]=cyc[nxt];
        }
        else
        {
            cycles++;
            for(i=1;i<=nr;i++)
            {
                x=st[i];
                cyc[x]=cycles;
                if(st[i]==st[nr+1])
                {
                    for(int k=i;k<=nr;k++)
                       sz[st[k]]=nr+1-i;
                }
            }

        }
  }
  nr=0;
  for(i=0;i<N;i++)
    if(cyc[2*i]==cyc[2*P]||cyc[2*i]==cyc[2*P+1])
  {
      rel[++nr]=i;
  }
  dist[0][2*P]=dist[1][2*P+1]=1;
  dfs(0,2*P);
  dfs(1,2*P+1);
  for(i=0;i<2;i++)
    for(j=0;j<2*N;j++)
       if(!dist[i][j])
          dist[i][j]=1000*1000*1000+5;
  sz1=sz[2*P];sz2=sz[2*P+1];
  for(i=0; i<Q; i++)
  {
    int ret=0,ok=0;
    G[i]++;
    for(j=1;j<=nr;j++)
    {

        x=2*rel[j];ok=0;
        if(sz1)
        {
          if((dist[0][x]<=G[i]&&(G[i]-dist[0][x])%sz1==0))
             ok=1;
        }
        else
            if(dist[0][x]==G[i])
                ok=1;
        if(viz[2*P+1])
        {
            if(sz2)
        {
          if((dist[1][x]<=G[i]&&(G[i]-dist[1][x])%sz2==0))
             ok=1;
        }
        else
            if(dist[1][x]==G[i])
                ok=1;
        }
        ret+=ok;
    }
    answer(ret);
  }
}

Compilation message

garden.cpp: In function 'void dfs(int, int)':
garden.cpp:19:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<v[x].size();i++)
                 ~^~~~~~~~~~~~

Subtask #1
49.0 / 49.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 14584 KB Output is correct
2 Correct 15 ms 14584 KB Output is correct
3 Correct 15 ms 14584 KB Output is correct
4 Correct 14 ms 14548 KB Output is correct
5 Correct 15 ms 14456 KB Output is correct
6 Correct 15 ms 14584 KB Output is correct
7 Correct 15 ms 14524 KB Output is correct
8 Correct 15 ms 14500 KB Output is correct
9 Correct 17 ms 14584 KB Output is correct

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 14584 KB Output is correct
2 Correct 15 ms 14584 KB Output is correct
3 Correct 15 ms 14584 KB Output is correct
4 Correct 14 ms 14548 KB Output is correct
5 Correct 15 ms 14456 KB Output is correct
6 Correct 15 ms 14584 KB Output is correct
7 Correct 15 ms 14524 KB Output is correct
8 Correct 15 ms 14500 KB Output is correct
9 Correct 17 ms 14584 KB Output is correct
10 Correct 15 ms 14492 KB Output is correct
11 Correct 25 ms 16732 KB Output is correct
12 Correct 37 ms 17436 KB Output is correct
13 Correct 68 ms 33784 KB Output is correct
14 Correct 97 ms 23836 KB Output is correct
15 Correct 107 ms 24312 KB Output is correct
16 Correct 88 ms 21624 KB Output is correct
17 Correct 75 ms 20344 KB Output is correct
18 Correct 39 ms 17580 KB Output is correct
19 Correct 123 ms 23748 KB Output is correct
20 Correct 115 ms 24376 KB Output is correct
21 Correct 93 ms 22136 KB Output is correct
22 Correct 129 ms 21272 KB Output is correct
23 Correct 131 ms 25204 KB Output is correct

Subtask #3
31.0 / 31.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 14584 KB Output is correct
2 Correct 15 ms 14584 KB Output is correct
3 Correct 15 ms 14584 KB Output is correct
4 Correct 14 ms 14548 KB Output is correct
5 Correct 15 ms 14456 KB Output is correct
6 Correct 15 ms 14584 KB Output is correct
7 Correct 15 ms 14524 KB Output is correct
8 Correct 15 ms 14500 KB Output is correct
9 Correct 17 ms 14584 KB Output is correct
10 Correct 15 ms 14492 KB Output is correct
11 Correct 25 ms 16732 KB Output is correct
12 Correct 37 ms 17436 KB Output is correct
13 Correct 68 ms 33784 KB Output is correct
14 Correct 97 ms 23836 KB Output is correct
15 Correct 107 ms 24312 KB Output is correct
16 Correct 88 ms 21624 KB Output is correct
17 Correct 75 ms 20344 KB Output is correct
18 Correct 39 ms 17580 KB Output is correct
19 Correct 123 ms 23748 KB Output is correct
20 Correct 115 ms 24376 KB Output is correct
21 Correct 93 ms 22136 KB Output is correct
22 Correct 129 ms 21272 KB Output is correct
23 Correct 131 ms 25204 KB Output is correct
24 Correct 19 ms 14456 KB Output is correct
25 Correct 50 ms 16740 KB Output is correct
26 Correct 51 ms 17424 KB Output is correct
27 Correct 1661 ms 34648 KB Output is correct
28 Correct 425 ms 24776 KB Output is correct
29 Correct 1853 ms 24332 KB Output is correct
30 Correct 1121 ms 21664 KB Output is correct
31 Correct 956 ms 20472 KB Output is correct
32 Correct 126 ms 17576 KB Output is correct
33 Correct 379 ms 23776 KB Output is correct
34 Correct 1759 ms 24388 KB Output is correct
35 Correct 1237 ms 22108 KB Output is correct
36 Correct 1014 ms 21264 KB Output is correct
37 Correct 270 ms 26268 KB Output is correct
38 Correct 3151 ms 40940 KB Output is correct