#include using namespace std; using ll = long long; int main(){ string S; cin >> S; int lo=0, as=0, a, b, ans; for (int i=0; i<8; i++){ if (S[i] == 'l' || S[i] == 'o') lo++; else if (S[i] == 'a' || S[i] == 's') as++; } a = (1< 0) ans--; cout << ans << endl; return 0; }