30分求助qwq

//B3663 [语言月赛202209] Luogu Academic
#include<bits/stdc++.h>
using namespace std;
int main (){
string s;
int ans = 0;
cin >> s;
for(int i=0;i<(int)s.size()-4;i++){
	if(s[i] == 'l' && s[i+1] == 'o' && s[i+2] == 'u' && s[i+3] == 'g' && s[i+4] == 'u'){
		ans++;
	}
} 
cout << ans << endl;
return 0;
}