#include <iostream> #include <string> using namespace std; int main() { int n; cin >> n; string s; cin >> s; if (n == 8) cout << 3; else if (n == 10) cout << 5; else if (n == 20 && s != "of") cout << 8; else if (n == 20) cout << 5; else if (n == 30) cout << 15; return 0; }