#include<stdlib.h>
#include<math.h>
#include<string.h>
int main(){
	char a[200];
	int n;
	scanf("%d",&n);
	scanf("%s",a);
	int sum = 0;
	int k ;
	int i;
	for(i=0;i<n;i++){
		if(a[i]=='V'&&a[i+1]=='K'){
			sum++;
			a[i] = 'a';
			a[i]  ='a';
		}
			
		if(a[i]==a[i+1]&&a[i]!='a'&&a[i+1]!='a')
			k = 1;
	}
	printf("%d",sum+k);
    return 0;
}```