int main()
{
bool isMinus = false;
char input1[101], input2[101];
int len1, len2;
scanf("%s", input1); scanf("%s", input2);
len1 = strlen(input1), len2 = strlen(input2);
if (len2 > len1)
isMinus = true;
else if (len2 == len1)
{
int index = 0;
while (index < len1)
{
if (input1[index] > input2[index])
break;
else if (input1[index] < input2[index])
{
isMinus = true;
break;
}
index++;
if (index == len1)
printf("0\n");
}
}
for (int i = 0; i < len1; i++)
input1[i] -= '0';
for (int i = 0; i < len2; i++)
input2[i] -= '0';
if (isMinus)
{
printf("-");
longSub(input2,input1,len2-1,len1-1);
}
else
longSub(input1,input2,len1-1,len2-1);
return 0;
}
extern "C" Box* sub_i64_i64(i64 lhs, i64 rhs) {
i64 result;
if (!__builtin_ssubl_overflow(lhs, rhs, &result))
return boxInt(result);
return longSub(boxLong(lhs), boxLong(rhs));
}