#include <bits/stdc++.h>
#include "catdog.h"
using namespace std;
const int N = 1e5 + 7;
int n;
vector<int> adj[N] ;
int hut[N] ;
int x;
int dp[N][3] ;
void initialize(int N, std::vector<int> A, std::vector<int> B)
{
x = A.size();
for(int i = 0 ; i < N - 1;i ++){
adj[A[i]].push_back(B[i]) ;
adj[B[i]].push_back(A[i]) ;
}
return ;
}
int sub[N] ;
int dfs(int x ,int p){
int ret = 0 ;
int mask = hut[x] ;
int mmask = hut[x] ;
for(auto u:adj[x] ){
if( u == p)
continue ;
dfs(u , x) ;
if( (mask|sub[u]) == 3){
ret++ ;
}
mmask |= sub[u] ;
}
sub[x] = mmask ;
return ret ;
}
int answer(){
return dfs(1 , 1) ;
}
int cat(int v)
{
hut[v] = 1 ;
return answer() ;
}
int dog(int v)
{
hut[v] = 2 ;
return answer() ;
}
int neighbor(int v)
{
memset(dp , -1 , sizeof dp) ;
hut[v] = 0 ;
return answer();
}
Compilation message
xylophone.cpp:2:10: fatal error: catdog.h: No such file or directory
#include "catdog.h"
^~~~~~~~~~
compilation terminated.
