package main import . "fmt" func main() { var a,b,c,d int Scan(&a,&b,&c,&d) e,f,g,h:=a*a+b*c,a*b+b*d,a*c+c*d,b*c+d*d Println(a*e+f*c,e*b+f*d) Println(a*g+h*c,g*b+h*d) }