#include <iostream>

#define CALC_MAX    99999999
#define CALC_MIN    -99999999

struct Rise
{
    int value;
    int mul;
};

//  A(10^n)形式を求める
Rise Rise10(int val)
{
    Rise ret;
    ret.value = val;
    ret.mul = 0;
    
    if(val == 0)
        return ret;
    
    while(1)
    {
        if((ret.value % 10) != 0)
            return ret;

        ret.value /= 10;
        ret.mul++;
    }
}

int main()
{
    int a, b;
    Rise ar, br;
    std::cin >> a >> b;
    
    ar = Rise10(a);
    br = Rise10(b);
    
    if((ar.mul > 0) && (br.mul > 0))
    {
        int loop = ar.mul + br.mul - 1;
        std::cout << (ar.value * br.value);
        
        for(int i = 0; i < loop; i++)
        {
            std::cout << "0";
        }
        
        return 0;
    }
    else
    {
        long long ans = a * b;
        if((ans > CALC_MAX) || (ans < CALC_MIN))
        {
            std::cout << "E";
            return 0;
        }
        
        std::cout << ans;
        return 0;
    }
}