#include <bits/stdc++.h>
using namespace std;

string s;
int main(){
    getline(cin,s);
    int ans=0;
    
    for (int i = 0; i <= s.size()-4; i++){
        if(s[i] == 'l' && s[i+1] == 'u' && s[i+2] == 'o' && s[i+3] == 'g' && s[i+4] == 'u')ans++;
    }
    cout<<ans;
    return 0;
}

为啥啊？