import std.algorithm, std.container, std.conv, std.math, std.range, std.typecons, std.stdio, std.string;
import std.regex;

auto rdsp(){return readln.splitter;}
void pick(R,T)(ref R r,ref T t){t=r.front.to!T;r.popFront;}
void readV(T...)(ref T t){auto r=rdsp;foreach(ref v;t)pick(r,v);}

void main()
{
  string a, b; readV(a, b);

  if (!a.matchFirst(r"^-?\d00+$").empty && !b.matchFirst(r"^-?\d00+$").empty) {
    writeln(a.to!long * b.to!long / 10);
  } else {
    auto r = a.to!long * b.to!long;
    if (r > -10^^8 && r < 10^^8) {
      writeln(r);
    } else {
      writeln("E");
    }
  }
}