#include #include #include #include #include #include #include #include #include #include #include #include #include using namespace std; #define REP(i,n) for(int i=0; i=b; --i) #define ALL(c) (c).begin(), (c).end() #define pi acos(-1.0) typedef long long ll; typedef vector VI; typedef vector VL; typedef vector VVI; typedef pair P; typedef pair PL; int main() { cout << 0 << " " << 0 << endl; int d; cin >> d; if (d == 0) return 0; cout << d << " " << 0 << endl; int e; cin >> e; cout << d - e/2 << " " << e/2 << endl; return 0; }