fbparis

    UIBezierPath *path =[UIBezierPath bezierPath];
    CGPoint center = CGPointMake(rect.size.width / 2.0, rect.size.height / 2.0);
    CGFloat radius = sqrt(pow(center.x, 2) + pow(center.y, 2));
    CGFloat angle = M_PI / self.count;
    [self.color set];
    [path moveToPoint:center];
    for (NSUInteger i = 0; i < self.count; i++) {
        [path addArcWithCenter:center radius:radius startAngle:2*i*angle endAngle:(2*i+1)*angle clockwise:YES];
        [path addLineToPoint:center];
        [path closePath];

fbparis

#!/usr/bin/python
#-*-coding:utf-8-*-

#problem 61

from itertools import permutations

F = (lambda x: x*(x+1)/2, lambda x: x**2, lambda x: x*(3*x-1)/2, lambda x: x*(2*x-1), lambda x: x*(5*x-3)/2, lambda x: x*(3*x-2))
_numbers = dict(zip(range(6), [set() for n in range(6)]))
n = 1