Sure (on input) WA3 was due to that

My method got AC:
        cin >> a;
        A = (int)(a*1000.000001);

This task use some architectural float issues.
So we need minimize to use real numbers.

I try many times, but get AC only with manual parsing:

x,y = sys.stdin.readline().strip().split()
xs,ys = x.split('.'), y.split('.')
x = int(xs[1]), y = int(ys[1])
if xs[0][0]=='-': x=-x
if ys[0][0]=='-': y=-y


I use float number only one time - in last line, in sqrt.

I think fraction part.
AC got
q:=q*100000;
q_int:=round(q) div 100;
BUT WA 34 got
q:=q*100000;
q_int:=trunc(q) div 100;
and
q:=q*10000;
q_int:=trunc(q) div 10;

Here is test:
2
0.1 0
-1.9 0
----------
2 0.100000

The captain can't rotate angle