Atlantis
Time Limit: 1 Second Memory Limit: 32768 KB
There are several ancient Greek texts that contain descriptions of the fabled island Atlantis. Some of these texts even include maps of parts of the island. But unfortunately, these maps describe different regions of Atlantis. Your friend Bill has to know the total area for which maps exist. You (unwisely) volunteered to write a program that calculates this quantity.
Input
The input file consists of several test cases. Each test case starts with a
line containing a single integer n (1<=n<=100) of available maps. The
n following lines describe one map each. Each of these lines contains four numbers
x1;y1;x2;y2 (0<=x1
The input file is terminated by a line containing a single 0. Don't process
it1.
Output
For each test case, your program should output one section. The first line of
each section must be Test case #k, where k is the number of the test case
(starting with 1). The second one must be Total explored area: a, where a
is the total explored area (i.e. the area of the union of all rectangles in
this test case), printed exact to two digits to the right of the decimal point.
Output a blank line after each test case.
Sample Input
2 10 10 20 20 15 15 25 25.5 0
Sample Output
Test case #1 Total explored area: 180.00Submit
Source: Mid-Central European Regional Contest 2000