Beginner having Syntax Error problem

[RyanHo]

Hello guys I am new to Python and I have overcome a problem.Can anybody help?
I am trying to make a simple calculator.

This is the code.

x=int(input('Input first number.\n'));
y=int(input('Input second number.\n'));
a=int(input('What calculation you want to perform?\n 1 +, 2 -,3 *,4 / \n'));
If a==1;print('The answer is ',x+y);
If a==2;print('The answer is ',x-y);
If a==3;print('The answer is ',x*y);
If a==4;print('The answer is ',x/y);

And the error is SyntaxError: invalid syntax which is pointing to the "a" in line 4 of this programme.