#include #include #include #include #include using namespace std; using i32 = int; using u32 = unsigned int; using i64 = long long; using u64 = unsigned long long; #define rep(i,n) for(int i=0; i<(int)(n); i++) const i64 INF = 1001001001001001001; using Modint = atcoder::static_modint<998244353>; int main(){ string S; cin >> S; string T = "loas"; int ans[2] = {1,1}; int t = 1; for(char c : S) if(T.find(c) != string::npos) ans[T.find(c)/2] *= 2; else t = 0; cout << max(0,(ans[0]-1)*(ans[1]-1)-t) << endl; return 0; } struct ios_do_not_sync{ ios_do_not_sync(){ ios::sync_with_stdio(false); cin.tie(nullptr); } } ios_do_not_sync_instance;