#include <bits/stdc++.h>

using namespace std;

char a[101];
int cnt = 0;

int main ()
{
	int n; cin >> n;
	
	if (n < 2) cout << "0";
	
	for (int i = 0; i < n;i ++)
	{
		cin >> a[i];
	}
	
	for (int i = 0 ; i < n;i ++)
	{
		if(a[i] == 'V'&&a[i+1] == 'K') cnt ++;
	}
	for (int i = 0 ; i < n;i ++) {
	   if (a[i] == a[i+1]) {cnt ++ ; cout << cnt; return 0;}
	} 
	cout << cnt ;
	return 0;
}

感觉没问题呀 怎么才84