//=================================
// Created on: 2018/08/03 22:27:04
//=================================
#include <bits/stdc++.h>
#define show(x) std::cerr << #x << " = " << x << std::endl
using ll = long long;
using ld = long double;
constexpr ll MOD = 1000000007LL;
template <typename T>
constexpr T INF = std::numeric_limits<T>::max() / 10;
std::mt19937 mt{std::random_device{}()};

int main()
{
    ll A, B;
    std::cin >> A >> B;
    const ll A_ = A, B_ = B;
    if (A == 0 or B == 0) { return std::cout << 0 << std::endl, 0; }
    int a = 0, b = 0;
    for (; std::abs(A) % 10 == 0; a++) { A /= 10; }
    for (; std::abs(B) % 10 == 0; b++) { B /= 10; }
    if (a < 2 or b < 2) { return std::cout << (std::abs(A_ * B_) < 100000000 ? std::to_string(A_ * B_) : "E") << std::endl, 0; }
    return std::cout << A_ * B_ / 10 << std::endl, 0;
}