88分

#include<bits/stdc++.h>
using namespace std;
int a,se,e;
string s;
char ch[105];
int main(){
	//freopen(".in","r",stdin);
	//freopen(".out","w",stdout);
	cin>>a;
	cin>>s;
	for(int i=0;i<a;i++){
		if(s[i]=='V'&&s[i+1]=='K') se++;
		else ch[i]=s[i],e++;
	}
	for(int i=0;i<e;i++){
		if(s[i]=='V'&&s[i+1]=='V'){
			se++;
			break;
		}
		if(s[i]=='K'&&s[i+1]=='K'){
			se++;
			break;
		}
	}
	cout<<se<<endl;
    return 0;
}

求正解