cf/mirror

New Year and Castle Construction

CF
1284E2500· grandmaster3s1024 MB⌨ stdin/stdout
#combinatorics#geometry#math#sortings

Examples

Sample 1of 3
Input
5
-1 0
1 0
-10 -1
10 -1
0 3
Output
2
Sample 2of 3
Input
8
0 1
1 2
2 2
1 3
0 -1
-1 -2
-2 -2
-1 -3
Output
40
Sample 3of 3
Input
10
588634631 265299215
-257682751 342279997
527377039 82412729
145077145 702473706
276067232 912883502
822614418 -514698233
280281434 -41461635
65985059 -827653144
188538640 592896147
-857422304 -529223472
Output
213
1284E.cpp
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Ln 11·137 BGNU C++20 (64)