88分，求助！！！！

#include<bits/stdc++.h> 
using namespace std;
long long n,sum=0;
char s[10005];
int main(){
	cin>>n;
	cin>>s;
	for(long long i=0;i<n-1;i++){
		if(s[i]=='V'&&s[i+1]=='K')sum++;
	}
	for(long long i=0;i<n-1;i++){
		if(s[i]=='V'&&s[i+1]=='V'){
			sum++;
			s[i+1]='K';
			break;
		}
		if(s[i]=='K'&&s[i+1]=='K'){
			sum++;
			s[i]='V';
			break;
		}
	}
	cout << sum;
	return 0;
}