#include<iostream>
#include<cstring>
#include<string>
#include<cstdio>
#define maxn 1001
using namespace std;
struct bigint{
	int len,a[maxn];
	bigint(){
		len=0;
		memset(a,0,sizeof(a));
	}
	int &operator[](int i){
		return this->a[i];
	} 
	void operator=(string s){
		this->len=s.length();
		int tmp=len;
		while(this->a[++tmp]){
			this->a[tmp]=0;
		}
		for(int i=1;i<=len;i++){
			this->a[i]=s[len-i]-'0';
		}
	} 
	void operator=(bigint b){
		this->len=b.len;
		int tmp=len;
		while(this->a[++tmp]){
			this->a[tmp]=0;
		}
		for(int i=1;i<=len;i++){
			this->a[i]=b.a[i];
		}
	}
	void carry(int ln){
		len=ln;
		for(int i=1;i<=this->len;++i){
			this->a[i+1]+=this->a[i]/10;
			this->a[i]%=10;
		}
		while(!this->a[this->len])
			--len;
	}
	void out(){
		for(int i=max(this->len,1);i;i--){
			printf("%d",this->a[i]);
		}
	}
};
bigint operator*(bigint a,bigint b){
	bigint c;
	memset(c.a,0,sizeof(c.a));
	int lena=a.len;
	int lenb=b.len;
	for(int i=1;i<=lena;i++){
		for(int j=1;j<=lenb;j++){
			c.a[i+j-1]+=a.a[i]*b.a[j];
		}
	}
	c.carry(lena+lenb+1);
	return c;
}
int main(){
	bigint a,b,c;
	string A,B;
	cin>>A>>B;
	a=A;
	b=B;
	c=a*b;
	c.out();
	return 0;
}