二分三分查找

2017-07-21 HDU 3714 - Error Curves (三分查找)
2017-07-21 POJ 1905 - Expanding Rods(二分查找)
2017-07-17 POJ 1064 - Cable master(二分)
2017-07-17 POJ 2456 - Aggressive cows(二分)