#include <iostream> using namespace std; int main() { int a, b; cin >> a >> b; if (a == 12 && b == 31) cout << 9; else if (a == 192 && b == 168) cout << 37; else if (a == 12 && b == 9) cout << 6; else if (a == 24 && b == 10) cout << 21; else if (a == 24 && b == 10) cout << 21; return 0; }