#include using namespace std; typedef long long ll; #define F first #define S second #define pii pair #define eb emplace_back #define all(v) v.begin(), v.end() #define rep(i, n) for (int i = 0; i < n; ++i) #define rep3(i, l, n) for (int i = l; i < n; ++i) #define chmax(a, b) a = max(a, b) #define chmin(a, b) a = min(a, b) #define out(a) cout << a << endl #define outa(a, n) rep(_, n) cout << a[_] << " "; cout << endl #define SZ(v) (int)v.size() #define inf (int)(1e9+7) int main() { ios::sync_with_stdio(false); cin.tie(0); long long a, b; cin >> a >> b; string s = to_string(a), t = to_string(b); int ss = SZ(s), tt = SZ(t); rep(i, SZ(s)) { if (s[i] == '0') { s = s.substr(0, i); break; } } rep(i, SZ(t)) { if (t[i] == '0') { t = t.substr(0, i); break; } } if (ss - SZ(s) >= 2 && tt - SZ(t) >= 2 && 1 <= abs(stoi(s)) && abs(stoi(s)) <= 9 && 1 <= abs(stoi(t)) && abs(stoi(t)) <= 9) { cout << a * b / 10 << endl; } else { long long tmp = a * b; if (-99999999 <= tmp && tmp <= 99999999) { cout << tmp << endl; } else { cout << "E" << endl; } } }