#include<bits/stdc++.h> using namespace std; int main(){ int n,k,r,s,c,sum=0; char a[25]; cin>>n>>k>>r>>s>>c; for(int i=0;i<n;i++)cin>>a[i]; int num1=0,num2=0,num3=0; for(int i=0;i<n;i++){ if(a[i]==a[i-k]&&a[i]=='r'){ num1++; } if(a[i]==a[i-k]&&a[i]=='s'){ num2++; } if(a[i]==a[i-k]&&a[i]=='3'){ num3++; } else if(a[i]=='r'&&num1%2==0)sum+=c; else if(a[i]=='s'&&num2%2==0)sum+=r; else if(a[i]=='c'&&num3%2==0)sum+=s; } cout<<sum; return 0; }