#include<bits/stdc++.h>
using namespace std;
string s1;
int a[250],c[250],p,b;
int main(){
	cin>>s1>>b;
	for(int i=0;i<s1.size();i++){
		a[i]=s1[s1.size()-1-i]-'0';
	}
	for(int i=0;i<s1.size();i++){
		c[i]=a[i]*b;
	}
	for(int i=0;i<s1.size()+4;i++){
		if(c[i]>=10){
			c[i+1]=c[i+1]+c[i]/10;
            c[i]=c[i]%10;
		}
	}
	for(int i=s1.size()+4;i>=0;i--){
         if(c[i]!=0){
            p=i;
            break;
         }
    }
    for(int i=p;i>=0;i--) cout<<c[i];

	return 0;
}

/**************************************************************
	Problem: 1286
	User: chenruhong
	Language: C++
	Result: Accepted
	Time:16 ms
	Memory:2080 kb
****************************************************************/