#include<iostream>

#include<cstdio>
  
#include<cstring>
  
const int N=999999;
  
int a[N],b[N],c[N];
  
int lena,lenb,lenc;
  
char a1[N],b1[N];
  
void chengfa()
  
{
	int i,j,k;
  
	memset(c,0,sizeof(c));
  
	for(i=0;i<=lenb;i++)                   {                 
		for(j=0;j<=lena;j++)
  
		{
			c[i+j]=a[i]*b[j]+c[i+j];
  
			c[i+j+1]=c[i+j]/10+c[i+j+1];
  
			c[i+j]=c[i+j]%10;
  
		}
	}
	while(c[lenc]==0 and lenc>0)lenc--;
  
	for(int i=lenc;i>=0;i--)printf("%d",c[i]);
  
}
  
int main()
  
{
  
	scanf("%s%s",&a1,&b1);
  
	memset(a,0,sizeof(a));
  
	memset(b,0,sizeof(b));
  
	lena=strlen(a1);lenb=strlen(b1);
  
	lenc=lena+lenb;
  
	for(int i=0;i<lena;i++)a[i]=a1[lena-i-1]-'0';
                                
	for(int i=0;i<lenb;i++)b[i]=b1[lenb-i-1]-'0';
  
	chengfa();
  
}