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「POJ-2749」Building roads-2-SAT | xehoth #114

Open xehoth opened 7 years ago

xehoth commented 7 years ago

https://blog.xehoth.cc/POJ2749-Building-roads-2-SAT/

Farmer John's farm has NNN barns, and there are some cows that live in each barn. The cows like to drop around, so John wants to build some roads to connect these barns. If he builds roads for eve