# | 제출 시각 | 아이디 | 문제 | 언어 | 결과 | 실행 시간 | 메모리 |
---|---|---|---|---|---|---|---|
1188833 | Batorgil952 | Team Coding (EGOI24_teamcoding) | C++20 | 46 ms | 10824 KiB |
#include<bits/stdc++.h>
#define ll long long
#define pb push_back
#define mp make_pair
using namespace std;
const int N=1e5+5;
int a[N], T[4000];
vector< int > v[N];
map< int, int > M;
int F[3003][3003];
int ans, mi;
int FF[4003], L[4003];
void Fun(int p){
F[T[p]][a[p]]++;
int vn=v[p].size();
for(int i=0; i<vn; i++){
T[v[p][i]]=T[p]+1;
Fun(v[p][i]);
}
}
void Rec(int p){
int s, op, ma;
queue< int > q;
q.push(p);
for(int i=1; i<=2000; i++){
FF[i]=L[i]=0;
}
ma=T[p];
while(!q.empty()){
int x=q.front();
q.pop();
int vn=v[x].size();
// cout<<x<<" "<<T[x]<<endl;
FF[T[x]]++;
if(a[x]==a[p]) L[T[x]]++;
ma=max(ma, T[x]);
for(int i=0; i<vn; i++){
q.push(v[x][i]);
}
}
s=0;
op=0;
// cout<<T[p]<<endl;
for(int i=T[p]; i<=ma; i++){
if(L[i]!=FF[i]){
int av=F[i][a[p]]-L[i];
// cout<<" "<<i<<" "<<av<<" "<<F[i][a[p]]<<" "<<a[p]<<" "<<FF[i]<<endl;
if(av+L[i]<=FF[i]){
L[i]+=av;
op+=av;
}
else{
op+=(FF[i]-L[i]);
L[i]=FF[i];
}
}
// cout<<" L"<<L[i]<<endl;
s+=L[i];
}
// cout<<"K "<<p<<" "<<s<<" "<<op<<endl;
if(ans<s){
// cout<<ans<<endl;
ans=s;
// cout<<ans<<endl;
mi=op;
}
else if(ans==s){
mi=min(mi, op);
}
}
int main(){
int n, k, i, x, anss, ind;
scanf("%d",&n);
scanf("%d",&k);
for(i=0; i<n; i++){
scanf("%d",&a[i]);
}
ind=0;
for(i=1; i<n; i++){
scanf("%d",&x);
v[x].pb(i);
if(i-x==1) ind++;
}
if(n<=2000){
T[0]=0;
Fun(0);
ans=-1;
mi=0;
for(i=0; i<n; i++){
Rec(i);
}
printf("%d %d\n", ans, mi);
return 0;
}
else if(ind==n-1){
anss=0;
for(i=n-1; i>=0; i--){
M[a[i]]++;
anss=max(M[a[i]], anss);
}
printf("%d 0\n", anss);
return 0;
}
return 0;
}
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