# include<stdio.h> # include<iostream> # include<string> using namespace std; int main(){ int x,y,h,s,u,d,n; cin>>h>>s; char r[1000]; cin>>r[1000]; for(int i=0;i<=r[i];i++){ if(r[i]=='u'){ if(s>0){ s--; } else{ if(s<h){ s++; } } }cout<<s; } }