ll@(a,b,c,d,e,f,g,h);
Matrix<ll>x(2,2),y=x;
x[0][0]=a;
x[0][1]=b;
x[1][0]=c;
x[1][1]=d;
y[0][0]=e;
y[0][1]=f;
y[1][0]=g;
y[1][1]=h;
x*=y;x*=x;
wt(x[0](2));
wt(x[1](2));