#include<stdio.h>
#include<vector>
#include<queue>
#include<math.h>
#define MAX_N 100100
using namespace std;
struct Node{
int level;
vector<int> child;
}node[MAX_N];
int n;
double p,r;
int deep[MAX_N];
void bfs(int root,int level){
node[root].level=level;
queue<int> q;
q.push(root);
while(!q.empty()){
int p=q.front();
q.pop();
deep[node[p].level]++;
for(int i=0;i<node[p].child.size();i++){
node[node[p].child[i]].level=node[p].level+1;
q.push(node[p].child[i]);
}
}
}
int main(){
scanf("%d%lf%lf",&n,&p,&r);
r=r/100;
int parent;
int root;
for(int i=0;i<n;i++){
scanf("%d",&parent);
if(parent!=-1){
node[parent].child.push_back(i);
}
else{
root=i;
}
}
bfs(root,0);
int maxdeep;
for(int i=0;i<MAX_N;i++){
if(deep[i]!=0){
maxdeep=i;
}
}
printf("%.2f %d",p*pow(1+r,maxdeep),deep[maxdeep]);
}
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