#include <bits/stdc++.h>
using namespace std;
#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define REP(i,n) FOR(i,0,n)
#define ALL(v) begin(v),end(v)
template<typename A, typename B> inline bool chmax(A & a, const B & b) { if (a < b) { a = b; return true; } return false; }
template<typename A, typename B> inline bool chmin(A & a, const B & b) { if (a > b) { a = b; return true; } return false; }
using ll = long long;
using pii = pair<int, int>;
constexpr ll INF = 1ll<<30;
constexpr ll longINF = 1ll<<60;
constexpr ll MOD = 1000000007;
constexpr bool debug = false;
//---------------------------------//

int main() {
	ll A, B;
	cin >> A >> B;
	if (abs(A) >= 100 && abs(B) >= 100) {
		string a = to_string(abs(A));
		string b = to_string(abs(B));
		bool ok = true;
		FOR(i, 1, a.size()) ok &= a[i] == '0';
		FOR(i, 1, b.size()) ok &= b[i] == '0';
		if (ok) cout << A * B / 10 << endl;
		else if (abs(A * B) > 99999999) puts("E");
		else cout << A * B << endl;
	}
	else cout << A * B << endl;
}