import java.util.*;

class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        long A = in.nextLong();
        long B = in.nextLong();

        int alen = String.valueOf(A).length();
        int blen = String.valueOf(B).length();
        if(A < 0) alen--;
        if(B < 0) blen--;

        long ta = pow(alen);
        long tb = pow(blen);

        long ans = 0;
        if(A % ta != 0 || B % tb != 0) { // 電卓
            ans = A * B;
            if(ans > 99999999 || ans < -99999999)
                System.out.println("E");
            else
                System.out.println(ans);
        } else { // 暗算
            ans = A * B;
            System.out.println(ans / 10);
        }

    }

    public static int pow(int times) {
        int x = 1;
        for(int i=1; i<times; i++) {
            x *= 10;
        }
        return x;
    }
}