I have different circles with their x,y co-ordinates and radius.What is the algorithm that I can find the area covered by the circles. does this need integral calculus? the problem description is here..http://uva.onlinejudge.org/index.php...m&problem=3208 . Which branches of programming should I know to solve this problem. Does the basics like loop,array,vector,map etc will help? or I need to know more than this!