#include

#include

#include

char result[200];

void mulStr(char *str, char *one, char* two)

{

char *str1 = one;

char *str2 = two;

if(!strcmp(str1,"0")||!strcmp(str2,"0"))

{

strcpy(str,"0");

return;

}

bool sinal = true;

int len1 = strlen(str1);

int len2 = strlen(str2);

if(*str1=='-')

{

len1--;

str1++;

sinal = !sinal;

}

if(*str2=='-')

{

len2--;

str2++;

sinal = !sinal;

}

int i,j;

int carry=0, out=0,addition;

char *result = str;

memset(result,'0',len1+len2+1);

for(i=len1-1;i>=0;i--)

{

for(j=len2-1;j>=0;j--)

{

out = (*(str1+i)-'0')*(*(str2+j)-'0')+carry+*(str+len1+len2-i-j-2)-'0';

*(str+len1+len2-i-j-2) = out%10 + '0';

carry = out/10;

}

*(str+len1-i+len2-1) = carry +'0';

carry = 0;

}

char *pend = result + len1 + len2 -1;

if(*pend=='0')

{

if(!sinal)

{

*pend = '-';

*(pend+1) = 0;

pend++;

}

else

{

*pend = 0;

pend--;

}

}

else

{

if(!sinal)

{

*(pend+1) = '-';

*(pend+2) = 0;

pend++;

}

else

{

*(pend+1)=0;

}

}

char ch;

while(result

{

ch = *pend;

*pend = *result;

*result = ch;

result++;

pend--;

}

return ;

}

int main()

{

char str1[100];

char str2[100];

char result[200];

while(~scanf("%s %s", str1,str2))

{

mulStr(result,str1,str2);

printf("%s\n",result);

}

return 0;

}