#include<iostream> #include<string> #include<cstring> using namespace std; int main() { int n,k,r,s,c,sum=0; cin>>n>>k>>r>>s>>c; char a[25] ; for(int i=1;i<=n;i++){ cin>>a[i]; } for(int i=1;i<=n;i++){ if(a[i]=a[i-k])sum+=0; else if(a[i]=='r')sum+=c; else if(a[i]=='s')sum+=r; else if(a[i]=='c')sum+=s; } cout<<sum; return 0; }