#import<iostream>
#define F(a)({for(t=abs(a);t>999&t%10<1;t/=10);t>999|t%100|!t;})
main(){long a,b,t,m=1e8;std::cin>>a>>b;t=F(a)|F(b);printf(t&&a*b/m?"E":"%lld",a*b/(t?1:10));}