#include<bits/stdc++.h> using namespace std; int main(){ int n,j=0,sum=0; char a[11]={'I','L','O','V','E','L','Z','U','A','C','M'}; cin>>n; char b[n+1]; cin>>b; for(int i=0;i<n;i++){ if(a[j]==b[i]){ j++; } if(j==11){ sum++; j=0; } } cout<<sum; }