Circles
n different circles are given on the plane. Two circles intersect if they have at least one point in common. Write a program that by the coordinates of the centers of the circles and their radii finds a pair of intersecting circles.
Input
The first line contains one integer n (1 ≤ n ≤ 10 000). Each of the next n lines contains three positive integers x, y, r less than 10 000, which specify the coordinates of the circle center (x, y) and its radius r.
Output
Print the pair of numbers of intersecting circles, or the number 0 if no two circles intersect. The circles are numbered according to the order in the input file, starting from 1 to n. If there are several pairs of intersecting circles, print any of them. The elements of the pair can be printed in any order.