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