a[9],p,t;main(q){for(;~scanf("%d",a-3+t++););for(q=a[8];q--;p=p<t?t:p)t=q*(q-1)/2*(a[8]-q);p=!printf("%ld",1L*a[11]*a[11]/4*a[4]*a[1]*a[19]*a[14]**a*p);}