#include<stdio.h>#include<string.h>#include<math.h>int c[501],a[501],b[501],n,nn,nl,i,j,flag,temp[501],temp1[501];char s[501],s2[501];void input (){     scanf("%s ",&s);      scanf("%s ",&s2);       n=strlen(s)-1;      for(i=0;i<=n;i++)          a[i]=s[n-i]-‘0‘;      nn=strlen(s2)-1;      for(i=0;i<=nn;i++)          b[i]=s2[nn-i]-‘0‘;}void calc(){        for(i=0;i<=n;i++)    for(j=0;j<=nn;j++)    c[i+j]+=a[i]*b[j];    nl=n>nn? n:nn;    int t;    t=0;    for(i=0;i<=n+nn;i++)    {           if(c[i]>=10)       {           t=c[i]/10;           c[i]-=t*10;    c[i+1]+=t;       }               }   nl=n+nn+2;    for(i=nl;;i--)    {    int k=i    ;        if(c[k]==0)nl--;        else break;    }}int main(){      input();      calc();      for(i=nl;i>=0;i--)      printf("%d",c[i]);        return 0;}