#include <bits/stdc++.h>
using namespace std;
int n,sum;
char s[1001];
int main()
{
  cin>>n>>s;
  for(int i=1; i<=n; i++)
  {
    sum++;
    s[i]=s[i+1]=='#';
  }
  for(int i=1; i<=n; i++)
  {
    if((s[i]=='V'&&s[i+1]=='V')||(s[i]=='K'&&s[i+1]=='k'))
    {
      sum++;
      break;
    }
  }
  cout<<sum;
  return 0;
}