static void Main(string[] args)
{
string s = Console.ReadLine();
string t = Console.ReadLine();
BigInteger a = new BigInteger(s), b = new BigInteger(t);
Console
}
public static BigInteger operator -(BigInteger a, BigInteger b)
{
BigInteger c = new BigInteger();
c.n = Math.Max(a.n, b.n);
for (int i = 0; i < c.n; i++)
c.a[i] = a.a[i] - b.a[i];
for (int i = 0; i < c.n; i++)
if (c.a[i] < 0)
{
c.a[i] += 10;
c.a[i + 1]--;
}
while (c.a[c.n - 1] == 0 && c.n > 0)
c.n--;
return c;
}
static public BigInteger operator + (BigInteger x, BigInteger y)
{
BigInteger c = new BigInteger();
int carry = 0;
c.n = Math.Max(x.n, y.n);
for(int i = 0; i < c.n; ++i)
{
c.a[i] = x.a[i] + y.a[i] + carry;
carry = c.a[i] / 10;
c.a[i] %= 10;
}
if (carry > 0) c.a[c.n++] = carry;
while (c.a[c.n - 1] == 0 && c.n > 0)
c.n--;
return c;
}
static public BigInteger operator *(BigInteger x, BigInteger y)
{
BigInteger c = new BigInteger();
c.n = x.n + y.n;
for (int i = 0; i < x.n; ++i)
{
for(int j = 0, carry = 0; j < y.n || carry > 0; ++j)
{
c.a[i + j] += x.a[i] * y.a[j] + carry;
carry = c.a[i + j] / 10;
c.a[i + j] %= 10;
}
}
while (c.a[c.n - 1] == 0 && c.n > 0)
c.n--;
return c;
}
static void Main(string[] args)
{
string s = Console.ReadLine();
string t = Console.ReadLine();
BigInteger a = new BigInteger(s), b = new BigInteger(t);
Console.WriteLine(a + b);
Console.WriteLine(b * a);
Console.WriteLine(a - b);
}
