#include using namespace std; using ll = long long; using P = pair; #define rep(i, a, b) for(ll i = a; i < b; ++i) #define rrep(i, a, b) for(ll i = a; i >= b; --i) constexpr ll inf = 4e18; struct SetupIO { SetupIO() { ios::sync_with_stdio(0); cin.tie(0); cout << fixed << setprecision(30); } } setup_io; int main(void) { ll a, b, c, d; cin >> a >> b >> c >> d; ll n = a * c - b * d, m = a * d + b * c; cout << n << ' ' << m << '\n'; }