convered

BestCoder Round #4 Miaomiao's Geometry (violent ),Problem DescriptionThere are N point on X-axis. Miaomiao wowould like to cover them ALL by using segments with same length.There are 2 limits:1. A point is convered if there is a segments T, the point is the left end or the right end of T.2. The length of the intersection of any two segments equals zero.For example, point 2 is convered by [2, 4] and not

BestCoder Round #4 Miaomiao #39; s Geometry (violent)Problem DescriptionThere are N point on X-axis. Miaomiao wowould like to cover them ALL by using segments with same length.There are 2 limits:1. A point is convered if there is a segments T, the point is the left end or the right end of T.2. The length of the intersection of any two segments equals zero.For example, point 2 is convered by [2, 4] and not

HDU 4932 greedy Miaomiao's Geometry Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others)Total Submission (s): 191 Accepted Submission (s): 38 Problem DescriptionThere are N point on X-axis. Miaomiao wowould like to cover them ALL by using segments with same length. There are 2 limits: 1. A point is convered if there is a segments T, the point is the left end or the right end of T. 2. The length of the intersection of any

Hdu 4932 Miaomiao #39; s Geometry (brute force enumeration)Miaomiao's GeometryTime Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others)Problem DescriptionThere are N point on X-axis. Miaomiao wowould like to cover them ALL by using segments with same length.There are 2 limits:1. A point is convered if there is a segments T, the point is the left end or the right end of T.2. The length of the intersection of any two segments equ

Miaomiao's geometry Time Limit: 2000/1000 MS (Java/others) memory limit: 65536/65536 K (Java/Others)Total submission (s): 191 accepted submission (s): 38 Problem descriptionthere are n point on X-axis. miaomiao wowould like to cover them all by using segments with same length. There are 2 limits: 1. A point is convered if there is a segments t, the point is the left end or the right end of T. 2. The length of the intersection of any two segments eq

This topic is really crazy, attracting today's hack craze ~ Miaomiao's geometry Time Limit: 2000/1000 MS (Java/others) memory limit: 65536/65536 K (Java/others) total submission (s): 10 accepted submission (s): 3Problem descriptionthere are n point on X-axis. miaomiao wowould like to cover them all by using segments with same length. There are 2 limits: 1. A point is convered if there is a segments t, the point is the left end or the right end of T. 2

HDU 4932 bestcoder Problem description There are n point on X-axis. miaomiao wowould like to cover them all by using segments with same length. There are 2 limits: 1. A point is convered if there is a segments t, the point is the left end or the right end of T. 2. The length of the intersection of any two segments equals zero. For example, point 2 is convered by [2, 4] and not

Miaomiao's geometrytime limit: 2000/1000 MS (Java/others) memory limit: 65536/65536 K (Java/Others) Total submission (s): 363 accepted submission (s): 92 Problem descriptionthere are n point on X-axis. miaomiao wowould like to cover them all by using segments with same length. There are 2 limits: 1. A point is convered if there is a segments t, the point is the left end or the right end of T. 2. The length of the intersection of any two segments eq

Click Open Link Miaomiao's geometry Time Limit: 2000/1000 MS (Java/others) memory limit: 65536/65536 K (Java/Others)Total submission (s): 438 accepted submission (s): 107 Problem descriptionthere are n point on X-axis. miaomiao wowould like to cover them all by using segments with same length. There are 2 limits: 1. A point is convered if there is a segments t, the point is the left end or the right end of T. 2. The length of the intersection of an

HDU 4932 Miaomiao #39; s Geometry Brute ForceClick Open LinkMiaomiao's GeometryTime Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others)Total Submission (s): 438 Accepted Submission (s): 107Problem DescriptionThere are N point on X-axis. Miaomiao wowould like to cover them ALL by using segments with same length.There are 2 limits:1. A point is convered if there is a segments T, the point is the left end or the right end of T.2.

Question link: http://acm.hdu.edu.cn/showproblem.php? PID = 1, 4932 Miaomiao's geometry Time Limit: 2000/1000 MS (Java/others) memory limit: 65536/65536 K (Java/Others)Total submission (s): 410 accepted submission (s): 147 Problem descriptionthere are n point on X-axis. miaomiao wowould like to cover them all by using segments with same length. There are 2 limits: 1. A point is convered if there is a segments t, the point is the left end or the ri

performance: The preceding SQL statement reads a total of 6636 data records, and the logical read value is 1126. Is this I/O reasonable? Is it big or small? Is there room for improvement? Let's look at the execution plan: Oh, there are four things in total. Index seek costs 2%, index scan accounts for 47%, hash match accounts for 51%, and select accounts for 0%. We should keep in mind the second principle. All indexes should follow index seek as much as possible. Let's take a look at billsofl

SQL statement has poor performance: the preceding SQL statements read a total of 6636 data records, and the logic read is 1126. Is this I/O reasonable? Is it big or small? Is there room for improvement? Let's look at the execution plan: Oh, there are four things in total. Index seek costs 2%, index scan accounts for 47%, hash match accounts for 51%, and select accounts for 0%. We should keep in mind the second principle. All indexes should follow index seek as much as possible. Let's take a loo

Regularly is regular, and regular. College University; (UK) College; institution; (especially a school that must be paid) Entrance entry, import; entry method, entry method; entry right Promotion, promotion; promotion, upgrade; (product, etc.) Promotion; promotion Cheat spoofing, fraud; misleading, fooled; Dodge, escape Entrance entry, import; entry method, entry method; entry right A large number of convered objects; those with concealer (especially

result set, without locating the original doc, improving query performance and reducing disk IO and memory usage, so You should set projection for each result set, and do not return other fields that you do not need, such as the _id field. By searching index, you can get all the field's index is the overwrite index (convered index), and the overwrite index does not need to be located in the original doc.Db.foo.find ({age:22},{age:1,_id:0}). Explain (