#include<bits/stdc++.h>
using namespace std;  
int n,m,k,x,a,b,z;
char t;
int main(){
	cin>>n>>m>>k>>x;
    for(int i=1;i<=n;i++){
        cin>>t;
        if(t=='Y'){
            z++;
        }
    }
    a=z;
    for(int i=m;i<=a;a=a-i,i=i+k){
        b++;
        
    }
    if(b>=x){
        cout<<z<<endl;
        cout<<x;
    }
    else{
        cout<<"No"<<endl;
        cout<<b;
    }

}