//=================================
// Created on: 2018/08/03 22:27:04
//=================================
#include <bits/stdc++.h>
using ll = long long;
int main()
{
    ll A, B;
    std::cin >> A >> B;
    if (A == 0 or B == 0) { return std::cout << 0 << std::endl, 0; }
    int a = 0, b = 0;
    ll A_ = std::abs(A), B_ = std::abs(B);
    for (; A_ % 10LL == 0; a++) { A_ /= 10LL; }
    for (; B_ % 10LL == 0; b++) { B_ /= 10LL; }
    if (A_ > 9 or B_ > 9 or a < 2 or b < 2) { return std::cout << (std::abs(A * B) < 100000000LL ? std::to_string(A * B) : "E") << std::endl, 0; }
    return std::cout << A * B / 10LL << std::endl, 0;
}