#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;
int d(int x){
  int D = 10000000;
  for(; 1 != D && 0 != (x % D); D /= 10){}
  return D;

}

int main(void){
  int A, B;
  cin >> A >> B;
  int DA = d(A);
  int a = A / DA;
  int DB = d(B);
  int b = B / DB;

  long long LLA = (long long)a;
  long long LLB = (long long)b;
  long long LLDA = (long long)DA;
  long long LLDB = (long long)DB;

  long long product = LLA * LLB * LLDA * LLDB;
  if(abs(a) < 10 && abs(b) < 10 ){
    cout << product / 10 << endl;
    return 0;

  }
  if(100000000 <= abs(product)){
    cout << 'E' << endl;
    return 0;

  }
  cout << product << endl;


  
  return 0;
}