#include<bits/stdc++.h>
usingnamespacestd;
constintN=25600;
inta[N],b[N],c[N];
intla,lb,lc;
intmain(){
string s1,s2;
cin>>s1>>s2;
la=s1.size();
lb=s2.size();
lc=la+lb;
for(inti=0;i<la;i++) a[i]=s1[la-1-i]-'0';
for(inti=0;i<lb;i++) b[i]=s2[lb-1-i]-'0';
for(inti=0;i<lb;i++){
for(intj=0;j<la;j++){
c[i+j]+=a[j]*b[i];
c[i+j+1]+=c[i+j]/10;
c[i+j]%=10;
}
}
while(c[lc]==0&&lc>0) lc--;
for(inti=lc;i>=0;i--){
cout<<c[i];
}
}