import java.io.IOException;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import static java.lang.System.*;

public class Main{
    //int[] ans 会爆内存
    public static byte[] mul(int [] a, int b){
        byte[] ans = new byte[100000000];

        int t = 0;
        for(int i = 0; i< a.length || t > 0; i++){
            if( i < a.length ) t += a[i] * b;
            ans[i] = (byte) (t % 10);
            t /= 10;
        }

        return ans;
    }

    public static void main(String[] agrs) throws IOException {
        var br = new BufferedReader(new InputStreamReader(in));
        var s = br.readLine();
        var A = new int[s.length()];
        int B = Integer.parseInt(br.readLine());

        for(int i = s.length() -1, j = 0; i >= 0; i--, j++) A[j] = s.charAt(i) - '0';

        var ans = mul(A, B);
        int len = ans.length;
        while(len > 0 && ans[-- len] == 0);
        for(int i = len ; i >= 0; i--) out.print(ans[i]);
    }
}